If a court liquidates OKccoin before the end of its withdrawal freeze the Bitcoins on the exchange could get locked up indefinitely, until a receiver shares them out. That would help maintain the supply/demand imbalance on other exchanges.
There's not enough coins to satisfy demand as it is.Not to mention, I have a sinking suspicion (as others have noted too) that some of the Chinese exchanges could be insolvent, might have been for a long time now. They've probably gotten away with naked shorting for a while now.
If the PBoC ever starts to audit them, they might be in trouble.