I've read this thread as its developed and theres a couple of things I don't understand:
1. If the situation is as you've described, why don't you sort it as Andy suggested rather than going on about it here? Andy is right...the mechanism is in place.
2. What is the point in saying the alleged defaulter is a big name DJ and uses this site if you are not prepared to name him? Smacks of small time sensationalism.
3. Someone has copied across the bidding history for this item....why? I know one of the under-bidders... they don't come on SS, and they are, ahem, less than pleased that their ebay activities have been posted up on here.