Gerda - You HAVE to get a lawyer. I don't care how, but you must do it. Don't be penny wise and pound foolish.
As for his demands - they're ridiculous by any standards. But you need an attorney to fight them. Put the fees on a credit card, borrow from family, sell something - I don't care how you do it, but don't try to do this on your own or it will cost you an enormous amount going forward.
