Never mind, I get it, he must have proxy bid himself!
That's it. Sometimes these snipers get too smart for themselves as they put in some REALLY ridiculous price in order to outbid everybody. A couple of times I have seen a $100 antique reloading tool go for $500 and when you check the bidders, you see where one guy bid $490 and another bid $500. Oops! Dunno if, under those situations, the buyer ever paid up.