I think LGATs can certainly bring out the dark side of human nature, in some people, ie since everything is meaningless, then do what the hell you want. ALso, according to what is said by LE, there are no victims, except those who ask for it, and they chose to be victims. It can probably feel really good to have all those boundaries released, especially by someone who is concerned with rules.
Forum:
Large Group Awareness Training, "Human Potential"