WHAT!!!????
you are not getting 5 to 1 when its all your chips in the pot!
Right he was actually getting 1050 to 0, since he had no chips committed. 5 to 1 was his chance of
[3s 2d] beating [10c 10d] and winning the pot against his opponent. He was probably hoping that his opponent held a hand like [Ah Jh] which would have made him only a 2 to 1 dog. But either way, if the blinds fold like they are supposed to, its still 1050 to 0, which is better than any odds he could lay.
Chips weren't at risk once he was heads up. The raise was a move to isolate, so he could freeroll for $1050. Out of his $999 bet (not even close to all his chips) he won the sidepot of $400 (guaranteed when the blinds fold), and had $599 returned.
It could have been disastrous if someone in the blind woke up with a huge hand--but with a 5 handed table and one fold in front, he only had to worry about 2 seats having those big
hands. The raise also wasn't that big in relation to the big-blinds, so its not like he was risking a lot to steal. If you have never tried a pure-steal from the button for fear that the blinds will hold pocket aces and call, you are missing a great opportunity.
Reasons that you can expect to not be called in this position:
+There are only two players to act, and they are both in the blind.
+The small blind is short-stacked, and not likely to want to commit his entire stack on anything less than a premium hand.
+The big blind is the big stack at the table, and less likely to want to trade places with the second biggest stack at the table with anything less than a premium hand.
+Most players think that anyone who raises to isolate an all-in must have a monster, since its 'bad tourney play' to not try to eliminate the player.
+Players usually think that since there is an all-in, your hand will have to be shown, and because of that, there is no way you would try a pure steal in this spot.
+The raise is only 2.5x--if the BB or SB wake up with a big hand, it should be easy to get away from a reraise.
I think the best part of this hand, is that it was guaranteed to be shown, which means that you are going to have an incredibly loose reputation when it plays out, win or lose.