With the blu-ray the subtitles are not coded into the video so they had to be created from scratch and made to say anything (though they don't really say anything too bad). At one point I had created a test clip of Neytiri, when she puts the little panther like thing down early in the movie, saying, "Burn in hell demon beast. Burn in hell!"
And it's possible to somewhat edit the briefing room scene, and I have done so. It doesn't completely remove the crowd, but does take out some of the idiot shots, especially at the end when they cheer and all.