...if there really were shenanigans afoot, it would be a simple matter for SLR to give the prize to a 'fake' account, and then we'd all know no better, i'm sure this is just the usual cock up, no good deed goes unpunished, etc.
Saying that, it does seem a bit rich that the winner doesn't want to honour certain terms in the agreement ('biological information'), but is prepared to accept others (like, the actual prize...).
i'd say no car for you if you don't wanna be in the photo op! And can you imagine if the prize had been to shoot a sex scene with a porn star, by the same logic you'd have had to shoot it in full PT. Such hubris...
xD