I completely understand your points. I understand having different edits/mixes/etc for different uses. Especially in something like a video game, which dynamically changes moment to moment. If they are contractually allowed to do it, he can't stop them. Sure, as an artist, he should probably have been more concerned with his contractual rights, if that turns out to be the underlying cause. Also, maybe there weren't any problems during the negotiation stages and he trusted the wrong people. It is possible he legit got screwed through a loophole. I mean, it's also possible he's being a diva, but history suggests when its artist vs corporation, the corporation is usually not the nice guy.
But does any of that make it right? If he made something he was proud of, and was thinking he was going to be able to release it properly in a way he approved, then wasn't allowed to, does that make it OK simply because they are legally able to? I don't think so. Basic legality vs morality stuff. It is odd that he is being rather forward about his dislike, and I agree that it may leave a bad taste when it comes to other developers, but in today's day and age, I'm glad he's sticking up for what he wanted a bit. I honestly wish more artists would come out with this stuff when it happens to them, because we know it happens a lot.
This is getting off topic and into crazy conjecture now due to our limited information, so we can leave it be.
TLDR - I see your points, but that does not make it OK. The poster I was responding to originally is still 100% wrong though.