He was as of a couple days ago for sure way after Cryptsy vacated their office digs. If I'm not mistaken, Mullick was using the office space while conducting his paid services.
The post office should be able to provide what the forwarding address is. Tomorrow's Saturday, and one may get lucky and get said info then, otherwise first thing Monday morning.
I'm guessing this is news to him, too. Otherwise he probably would have mentioned it here a day or two ago. It's quite relevant.
I have said 10 times for ages that Mullick vanished..
I have not seen him talk anywhere for a good couple months even once.