Hard to say. I imagine cleaning up the E-E after the events of the film took months, to ensure all the Borg tech had been fully removed from the ship as much as for any other reason. If that crewman was left in the corridor where Picard killed him and the cleanup crews were doing full autopsies, it's entirely possible they figured out that the crewman hadn't been fully assimilated and died from a phaser hit, which might lead to questions.
Under the circumstances though, it's nearly impossible for me to believe it would lead to charges. When the E-D recaptured Locutus they had the relative luxury of taking their time figuring out what they could do to salvage Picard. Under the circumstances portrayed in the film, Our Heroes had neither the time nor available resources to focus on unassimilating anyone. Heck, they didn't even have any proper containment options.
That's true; TBOBW had the luxury of being thrown to the side, in what felt like an organic plot development rather than a contrived one. Pt 2 is considerably underrated, for the most part, IMHO. Some contrivances are there - that's inevitable, but those don't feel jarring or putting some viewers out of the proceedings compared to what FC put out -- among fans and critics, YMMV of course and rewatchings always yield more detail either not seen before, or affirms, or refreshes to disprove one's previous reactions. It's all good.
As for TBOBW, Locutus isn't very-well guarded either - he clearly is being guarded, presumably near the middle of the cube where it's hardest to get to. Given the sheer volume of Borg bobbering about, there's also the point regarding the number of phaser hits they take before they adapt - and this time they don't, oddly - that's pretty amazing as well, since pt 1 had phasers re-tuned with a random frequency generator, which the Borg were shown to have compensated for adapted to... Of course, the TV show needed to bring back its lead character, whose contract was up for renewal - hence the cliffhanger in the first place. Regarding the different in context for FC, I just prefer the notion Picard was so enraged with his hatred of Borg, since he wasn't thinking of "get some tranquilizers that might knock them out" or other alternatives. Unless none existed, but Picard doesn't even, as Scotty might say, "shed one bloody tear" and unlike Klingons, humans have tear ducts. Besides, the Borg technology probably would filter it out anyway, assuming no species ever attempted such a thing in the past. (As with most things Trek, everything happens at the speed of the random plot generator. Ideally they aren't noticed or rendered minuscule by comparison to the rest of the story. ) Again, I think the idea was Picard to be so overwrought, but it begs so many questions needlessly.
Back to FC, the oft-used get-out-of-plot-free-card plot device of "The Borg will do nothing unless they see someone as a threat" is also utter gobbins, considering Picard and Lily wander around the their not-quite-yet-fully-commandeered ship with phasers, which apparently still work -- don't the Borg throw up a field that covers the entire range of frequencies by this point, since they can do just about everything else? In TNG, their force fields come up then down quickly as well, for the best utilization of power possible. Either way, phaser frequency bandwidth isn't infinite, the same technology is used for all so "each phaser will" is ultimately nonsense, and there's an impasse. By now that impasse should have been breached, but they play the same broken record in VOY as well, only VOY is spat on and FC heralded (when VOY sometimes deserves credit and FC rightly having the same nitpicks pointed out, as FC started the ball rolling - not VOY, but I digress.) Of all creatures in the universe, the ginormous collective known as "The Borg" would not forget Picard/Locutus/Picard/makesnodifferenceatthispoint, so as he's strutting down the corridors with the only thing missing being a Bee Gees song as incidental music, one would think any drone he's passing by would be quick to point and say "Hey Fred and Ethel, isn't he like still a threat given everything that's happened to his point? He's even armed and weilding a weapon. Isn't that a threat, even at face value?" or something. And yet no Borg he's passing opts to delay plugging in a part for 10 seconds just to pump in a few nanoprobes to stop a known threat and a big one at that. (Really, did Queen really say "Leave him and anyone with alone? He's mine? Screw logic and the known threat all these pesky little humans and other Federation beings provide?" That's great for a Bond villain. Not so much given the background of the Borg, whether or not there's a Queen handing out royal jelly. Even Guinan pointed out that they don't stop or do things piecemeal, and Picard's wandering around broken in several pieces and in terms of hierarchical importance, his being there is more a threat than plugging in a bric-a-brac as Picard could turn around, say "Yoink!" like Bugs Bunny, and remove it. After all these centuries the Borg gestalt is now so selectively dim? But to be fair, Guinan's experience is anecdotal and not gospel, and considering how underdeveloped human/Federation technology is, the only reason the Borg wanted Picard (and by extension the Federation) is to seek out all the strange new worlds, and to assimilate all life forms -- had anything of value presented itself to the varying species. Federation technology, or human technology for the bulk of 1701-D, is clearly nothing compared to the Borg but they still had something of value
beyond that. )
Overlooking how Borg won't be bothered with a random and threatening element (1701-E crewmembers as a (surprisng-to-nobody-except-borg?!) resistance force trying to take back their ship from the begins that are still in the process of commandeering it until long after they show up in ways they normally wouldn't, Given the importance of the
deflector dish in FC, Picard says "don't shoot near there, you may hit it" - later in the same scene, guess who fires CENTIMETERS away from its edge to stop a Borg? So glad he didn't miss, but Picard already said not to fire. They disconnect the dish and blow it up anyway. So now any cosmic dust speck will damage the hull, never mind meteroids, satellites, and other space junk they can't steer clear of. Don't they keep a spare on board, or will a new one be ready on Tuesday? "Assimilate this!", indeed - that moment needed backing music from Austin Powers... The chronotechnobabble warp field said in 2 seconds to returnto the 24th century was gobbins too. (at least I didn't mention how the scale of the dish set was too small, at full scale it would have been a larger obstacle to avoid, no pun intended...)
