Yes the owner of cryptocoinbank pool has sold his miner to recoup losses but not walked away and still has the free 10 GH miner, cryptocoinbank pool has 1/3 of the hashing power of nastypool yet in the last 24 hours Nastypool has cracked 9 blocks and cryptocoinbank pool has cracked none.  Not cost effective.  The game is set to just about cover the running costs, so far approx 6 BTC has been withdrawn but I bet most of this is people taking the money out they ploughed in, not coins they've earned through the game. I don't see how anyone can do anything about someone quitting a "game".