It's also basic psychology. No one wants to be the tallest blade of grass to get cut down first, so if you put everyone in the room and ask someone to speak up odds are no one will want to be the first one to do so. Especially since as the WON bit mentioned, it wouldn't have made any difference. So why cut your own throat for no reason? Most of these people have families and I'm sure saw the meeting for what it was and I can't blame them for not wanting to martyr themselves. Especially since with the nature of wrestlers, there was a pretty good chance anyone who did speak up would get hung out to dry by everyone else there.
Hunter waiting until the end to call out Karl was a bitch ass move though. Comes off as a 100% "don't forget who has the biggest dick here" play. It's just amazing how a guy can hit the lottery personally and professionally and still constantly reveal himself to be the most insecure, petty motherfucker possible.