Thankfully, Mr. Murck stepped in as a licensed attorney to broker their receipt. He was subjected to a lot of hazing and invasion of privacy here for doing so.
For the 5th time:
Under what legal authority is Murck able to receive and transfer stolen goods?.
As far as I can see, Patrick Murck is acting in contact with Tihan Seale, who is the only known individual known to represent the owners of Bitcoinica LP.
That gives him enough authority to recover whatever possessions that used to be in Bitcoinica's care when whoever stole these says he wants to return [part of] it.