I play extremely tightly the first couple of rounds, but I cant get away from AJ in late position to open. I would have raised to 45, just enough that crap hands wont call, and even BB has to put something in. I think that will get the job done: narrow down the hands you're against. however, it doesnt narrow down as well as a larger raise.

OP: no way in hell I call this reraise. watch him carefully to try and decipher if this was revenge from the steal, or a typical line. Try and see if you can use this same situation to bait him when you've got a much stronger hand.