If someone retracted a bid BEFORE the auction ended, you would have won the auction.
IIRC, if the auction ENDED while the other bidder was the high bidder, he won it.
At that point, the seller can only "offer" you the item at the bid you had in, using the "second chance" system.
I'm not positive on that, and don't have time to look it up though.
That is another reason that I always snipe.
I don't want any surprise wins, after I give up on one item and bid on something else.