http://blog.cryptsy.com/Since Cryptsy was late to the game with Cryptonote coins, hopefully not many lost their XMR there. Still, not great for the alt community. I can't believe that Cryptsy didn't run a real cold wallet for their BTC/LTC at least! Amateur hour, it seems.
Seems like a completely fabricated story that they are trying to mislead people with. An IRC daemon cannot do anything with a "cold" wallet, even a hot wallet is a stretch. The biggest indicator is the way the coins didn't move or get sold after this hypothetical theft contrary to every other theft we have seen till date. Cryptsy was deliberately not adding XMR under threats from BitcoinExpress et al and few other parties who didn't want to see it there. They also leaked confidential information about some of the users there illegally.