But I think that is when they personally profited from the money, used it buy cars and houses and clothes and whatever for themselves. There was a case in D.C. like that.
If this "prophet" didn't personally profit, I'm not sure there's a case.
If he told his followers they would go to hell if they didn't cough up the money, that would be duress, probably. From what I gather, though, he didn't do anything like that.
Don't get me wrong; I'd love to see this guy prosecuted or see the people get at least some of their money back without going to trial, but I don't know what the legal grounds would be.