If I got suspicious every time a cryptsy balance did something I didn't expect, I wouldn't be able to sleep at night.

The most likely explanation is bugs in the cryptsy software which are completely unrelated to 42.

There is no way cryptsy can keep hot wallets for every user, so your cryptsy balance was completely independent of the 42 blockchain, for all practical purposes. Cryptsy probably has only one or a few wallets for each coin, executing deposits and withdrawals through an internal ledger system. Given that the 42 code is practically a carbon copy of litecoin and is free for anyone to inspect, a best guess is that cryptsy had some bugs with their internal ledger system. That would be consistent with my experiences at cryptsy involving completely different coins from 42.

Even if the tripled coins made it to your confirmed balance, any 42 you sent through the blockchain would have to already exist from coinbase transactions. The only way to double spend is to fork the blockchain by a 51% attack, and to anyone's knowledge, that hasn't happened to 42.