Min reraise on the bubble
 

Party 109 SnG. Blinds are 150/300. There are 4 players left. Here are the approximate stack sizes:

UTG (Me) 3000
Button 3000
SB 1000
BB 3000

I get AQo UTG, and raise to 900. Button min-raises me to 1500. Your move?
This seemed like a monster hand that didn't want me to fold. It could also have been a weak resteal attempt. I think the former possibility was more likely. Any thoughts?

Suppose I call, and the flop is 952 rainbow. Push or check/fold?