20/180 Pokerstars FT- bottom two pair decision

[Sulphate1]

Hi I don't make a lot of posts around here but felt that I needed to with this one.

It's final table, down to 4 players.

I was the big stack at this point and seemingly bulling the table playing aggressively, raising a lot pre flop. As of course I should be. However I've only shown down solid hands.

My read on the villain is that he is a solid player, but I have re-raised him a couple of times which he has folded to, so is possible looking to play back at me.

PokerStars No-Limit Hold'em Tourney, Big Blind is t3000 (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero (t139552)
UTG (t19930)
Button (t100572)
SB (t9946)

Preflop: Hero is BB with 3[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, Button calls t3000, <font color="#666666">1 fold</font>, Hero checks.

Flop: (t6450) A[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets t4000</font>, <font color="#CC3333">Hero raises to t15000</font>, Button calls t11000.

Turn: (t36450) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t24000</font>, <font color="#CC3333">Button raises to t82422</font>, Hero ?

Now this has got out of hand. I was fairly stuck on what to do.

Now obviusly this is a huge pot, if I scoop it's basically the tournement win for me.

I was fairly suspicious of the button open limp, first time he has done this all FT.

What's your play here after the all in ? Thoughts on the flop checkraise- turn bet ? I thought fairly standard

Thanks