That's the thing: if all their exchange payment processor accounts are frozen / non-existent.. how are they gonna cash out?
This is why i posture that the worst is mostly behind us. Most if not all of those payment processor entities have already stopped doing business with the exchanges.
There may be some stragglers here and there, but by and large, yesterday was April 15th for all practical purposes.
There are still many options like perfect money, webmoney, western union, moneygram, paypal, skrill, ukash and anonymous visa cards and many more.