kalirion: Any basis for that guess?
F4LL0UT: Well, I don't see how any party other than Steam could be directly the problem here - I guess the devs would have mentioned such a party if there were one, if only to rid themselves of the blame. Then there's the fact that developers
aren't allowed to distribute uncensor patches through Steam or its community anymore. And finally, as you hinted, the fact that Steam has (I believe) never actually sued a developer over breaking their ToS yet.
Also, if it were an entirely different party they were worried about, they probably wouldn't have announced that they will at least provide video of said cut content. That hypothetical party that isn't Steam probably wouldn't care how and where that content is released so releasing it as video elsewhere would probably also be out of the question.
Anyway, breaking the ToS surely does give Steam theoretically the ability to sue, even if they don't do that in practice, and it is in the developers' best interest to present to most intimidating scenario to get sympathy so I guess that's how that claim of the risk of getting sued came to be.
Could be Sony or Microsoft. Having a game with more features on release (even in an unofficial patch) might violate a platform parity clause in whatever agreement they signed. While Valve might not be willing to sue them I'm sure neither Sony nor Microsoft has such compunctions. That sounds like a likely case as releasing footage seperately in a video might not violate said platform parity clause.
They can't just release a patch for Xbox and PS either since those platforms are strictly anti-AO.
[EDIT] It's probably Microsoft. Apparently they are well know for insane parity clauses among indie devs.
Probably didn't read the fine print until Microsoft let them know about it when MS heard about the patch.