That was a smart fold, a lot of people would not get away from that hand from the button. I would think that the UTG bettor had a semi-strong hand and I would have also 3 betted to get a better read on him, maybe not 4X his bet, but that's the call you made and I respect it. I really like that you had the discipline to fold when the SB pushed and then was called. You had to know you were beat in at least one spot and probably both, and if not both, then dominated in one and a coin flip to the other. You recognized that you were not in a good position to win, and if you call the initial raise and the SB calls too, then you are in a worse spot because you flopped top pair and would have been crushed by the aces, and the AK may even have come along for the ride. Good move on your part!