Didn't this same thing end up happening to some guy who bought an Evo off ebay? The whole interweb was in a tizzy. IIRC, the 30,000+ page thread was on some Subaru forums.
Anyone else remember?
In the end, the dude had rights to the car since he won on ebay, but gave it up.
EDIT:
CEG link,
NASIOC thread (145 pages)