Try exchanging to other alts like DOGE, then withdrawing. At this point they have probably cottoned onto the fact everyone is converting BTC to LTC, convert it to another primary alt.
They recently posted this on cryptorush about insolvency, and which coins you cannot withdraw.
Public Warning
ATTENTION: Please be aware that at this time, due to insolvency and site ownership changes, all deposits and trades are to be considered at your own risk. Depleted wallets will not be able to fund coin withdrawals. Affected Wallets: BTC, LTC, POT, AUR, QRK, WAS and BAT Semi-Official IRC Chat log from CryptoRush: http://pastebin.com/mrqJQ9Kb.
The following coins are offline for daemon upgrades: AUR, FCK, FRY, HXC, HUC, LEAF, LYC, PANDA, P$, Q2C, SCO, UTC, UNC, VMP
It sounds like like DOGE might be OK because it is not on their list of depleted wallets or the other list of coins offline for daemon upgrades. Looks like it would be a good idea to get all your coins out as fast as possible. One of the potential buyers says he has pulled out of the deal on his blog.
http://blog.moolah.ch/2014/04/01/statement-regarding-cryptorush/