[shadow29]

I'm new to the combinatronics stuff, so bear with me. There are 4 ways for him to have AK and 1 way each for AA and KK. Thus, he's 2:1 more likely to have AK than a set. Since the Button is as you say rocky, then I doubt that he caps with TT and goes nuts on the flop. I doubt that he goes nuts with QQ or JJ on the flop. Thus, the T didn't really change things.

UTG, however, could have 88 I suppose, if he's laggish preflop. But since you didn't say so, I'll assume that he's your garden variety (44/0/1.5) type player. I can definetly see UTG having some sort of big ace here. But that makes it even more likely that Button has KK.

I think that a calldown is reasonable.