The danger for those that have sent him money, is that he is in so much debt to them, that he will NEVER be able to full fill his obligations and still have living expenses, for himself.
The thing to do, is for them to get together and get a lawyer, then file for relief, that would put him in Bankruptcy and then they can get, at least some of their money and maybe some of their parts back.
With the amount of debt that he has, to them, I can't see any other way. Sad but, true
