Additionally, I think that to focus on Erhard in all of this is akin to focusing on Jim Jones, or Koresh, or Raniere, as the prime movers in various cult debacles.
In all cases, there are many, many enablers, and enablers are different than KoolAid-drinking dupes.
In Erhard's case, the enablers have Ph.D's, JD's, cash, and lot's of resources.
Important to look at
Forum:
Large Group Awareness Training, "Human Potential"