As usual when these things happen:
- If it's within 60 days open a PayPal dispute
- If you need his details for a police report let me know
- If he makes good the issue swiftly, then be graceful and tidy up PayPal disputes and police reports
Otherwise, I suggest that supersonic is added to the bad traders list, and anyone with contact information on him post it to help others avoid trading with him should he subsequently create alias accounts.