All-In vs. Chip Leader?

As it seems like you thought in your orginal post that he's been looking to play back at you for stealing too much then you made a good call. There's nothing wrong with getting your chips in with the best hand. You win this pot and it probably makes stealing easier as this win probably makes you chip leader and shows everybody that when you raise you're willing to all the way with it. A fold here encourages more reraises.