As I suggested at the beginning of the thread, I would suggest a group of people, reasonably respected in the community, be set up to judge the evidence. To proceed fairly they would have to weigh the evidence for particular addresses. These addresses can always be unlocked if an owner can submit proof of proper ownership by other than Mt. Gox.
So a group of unelected persons appoint themselves as a central authority to police a decentralized system. Can't possibly see what could go wrong with that? Maybe you should just use PayPal, they already are the sole judge without recourse for transactions on their network.