Party PL$25 Gone Crazy Lately?

I'm not going to post his screenname, but some new guy the past few nights has been putting the tables on tilt. He pots it pre-flop, sometimes with hands like 2-4-6-7, somehow catches, and gets 3 people to move all-in. I tried to gamble with him, but once again lost. Of course his VP$IP is around 60%, and I think he gives all of the money back at the end of every night.

The pots were huge at both of my tables last night. I was up about $180 at one point, but couldn't quit while I was ahead, and gambling on big pots ended up -$20?