He claimed they were not his funds - that they resulted from a transaction he conducted on behalf of a friend.  Then he strangely told AurumXChange that they could refund those coins to Bitcoinica.  They pretty much can't do anything without being able to determine the true ownership of those funds.  

If Zhou maintains they aren't his, then he can't authorise their release to anyone - including Bitcoinica.  If they are his own legitimate funds, then there's no reason he would authorise their release to anyone else - and he should have no problem proving to AurumXChange that they are his own legitimate funds.

The extent to which Zhou has been protected throughout the whole Bitcoinica debacle is truly sickening.