AK in trouble on the turn - hold'em or fold'em?

[McMelchior]

PStars $5 re-buy, down to 71 players, and the average stack is around t110,000.

Villain is an active player, loose and aggressive without being neither donk, maniac or real tough.

I have been playing tight; three hands earlier I have increased my stack by t20,000 by pushing two cards from the BB after 3 limpers, including villain, and making them fold.

PokerStars No-Limit Hold'em Tourney, Big Blind is t6000 (8 handed) FTR converter on zerodivide.cx

saw flop

UTG (t44844)
UTG+1 (t197797)
MP1 (t384544)
Hero (t133448)
CO (t90616)
Button (t293980)
SB (t120576)
BB (t197995)

Preflop: Hero is MP2 with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t6000, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t18000</font>, <font color="#666666">4 folds</font>, UTG+1 calls t12000.

Flop: (t47,400) 2[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG+1 checks, <font color="#CC3333">Hero bets t36000</font>, UTG+1 calls t36000.

I'm not crazy about that call, but I have seen villain gamble before, and I'm willing to put KsQs in his range. Or he could be way ahead with a slowplayed pair of JJ. AA? Highly unlikely.

Turn: (t119,400) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets t143497 (All-In)</font>, Hero ???

Can I put him on KsTs? That would be soo farfetched. I believe he would have opened AQ for a raise PF, and definitively bet (or CR'ed) them on the flop. 22 seems impossible.

I don't see any possible holdings of his I'm behind now where I can call with the pot offering me 2.5 : 1.

So it all comes down to: What could he be playing this way?

Best,

McMelchior (Johan)