Not sure why this makes an issue, but I will repeat it Cryptsy is not staking coins, explorer may have tagged some other addresses incorrectly.  Or it is possible that it unlocked the wallet and it staked prior to it locking again if they we sending coins, but I expect they use the switch to disable the stake engine.

And there is a lot more than 2 million coins on Cryptsy.  I just bought a million the other day and another 4+ million was on the book.