Actually, *not* withdrawing would protect you from a fork, as your balance exists as a row in a database table and not on the blockchain.

The pool lost around 30,000 coins due to the fork. I will personally cover anyone's losses from the fork.  Please contact me if you lost coins due to the fork.  I know that some people did in fact receive their coins eventually, once the fork resolved itself, so be prepared to document your losses.

Miners on the pool, cumulatively, should only have lost 20 blocks worth of coins, since those 20 blocks were invalidated before they were paid out.  All of the forked blocks that were paid out remained in your balances unless you withdrew them and they somehow got lost in the network.  Again, I am a bit skeptical about this happening as I was in communication with one person who eventually received all their payouts, even the ones sent during the fork.