the mysterious bet-call-bet play

no read on villain. The probe bet + call confused me. The push on the turn confused me even more. Thoughts?

PokerStars No-Limit Hold'em Tourney, Big Blind is t400 (9 handed) FTR converter on zerodivide.cx

Hero (t16189)
MP3 (t31566)
CO (t22721)
Button (t23994)
SB (t14330)
BB (t27200)
UTG (t16760)
UTG+1 (t16651)
MP1 (t8760)

Preflop: Hero is MP2 with 7[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t400, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t1600</font>, <font color="#666666">5 folds</font>, UTG+1 calls t1200.

Flop: (t3400) 8[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets t1000</font>, <font color="#CC3333">Hero raises to t4000</font>, UTG+1 calls t3000.

Turn: (t11400) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets t11026 (All-In)</font>

This is typically signs of an overpair (or maybe A8 or 22). But you are behind. Fold the turn.

-Gross

I would tend to agree.
However, I was thoroughly confused and couldn't make myself respect such a strange play, so I called. He flipped kj and I won. However, looking back... I still think it's an easy fold and I'm disappointed with myself for calling.

I'm not folding this, bets don't make sense.. call preflop indicates he probably doesn't have a pair higher than your 7's.. bet on the flop indicates he probably doesn't have an 8, overbet on the turn looks like he's trying to represent something and wants you to fold.