I'm not positive, suppose I'll have to go back and look through the arc. But, I'm remembering that the only thing about their personalities that changed was the inhibition to fight one another. Usually we discard evidence like brainwashing because a character's ability to think, or move are inhibited to a degree that limits their fighting capabilities, and it's something that's usually referenced. As far as I'm aware there were only a couple of cases where the fighter was influenced to such a degree, Wolverine was one of them, everyone else was still like they would otherwise be with the exception of their indifference to fighting one another. Perhaps I'm mistaken?