This could easily be cryptsy updating their coin daemon in anticipation of the fork. Rescan can take a long time depending on what equipment they have running. I would not be the least bit worried. Once the daemon catches up you will/should see your coins come through. I have seen this happen a few times with different coins on cryptsy. What is important to remember is that cryptsy has a hot wallet for deposits/withdrawal and cold wallet for reserves. From what I have experienced, trading coins has nothing to do with either wallet and is just part of cryptsy's internal accounting platform rather than a physical address change of coins.

So as long as cryptsy successfully updates the daemon to be up to date, everything will eventually come through. So sit back, relax and continue to whale watch in the mean time.