This seems to be the case currently for me, it let me withdraw alts with no problem. Bitcoin resulted in a statement that "the coin daemon is down and it will have to be done manually" or something to that effect. If that is the case, it could be a while until he gets through them all. But the fact that the alts are working gives me much more confidence in the possibility of getting them back. I hope they can sort it all out, this was quickly becoming my favorite exchange up until the last couple weeks.