Not wishing to defend the wts here, but it seems likely to me simply on face value that he was DF'd based on his having taken someone elses money and not paying it back.
Unless there was some other stuff going on that escalated into that situation and he felt he was owed the money he got, then I cant see why someone would accuse him or why the elders would deem sufficient evidence to start a JC and then actually DF him, unless he had actually taken the money.
But hey, I wasnt there, I dont know anything, I'm just saying what it looks like on face value.
So personally, I'd be very wary of jumping in to support someone in this position unless you have inside knowledge of the JC and are pretty damn sure he didnt actually defraud someone.