TPGK, slow played and raised allin

[betgo]

500+60 live MTT. Blinds 50/100. 4 limpers. I raise to 700 in SB with AQo. UTG limper, older oriental man calls. Flop comes AT2,r. For some reason I check the drawless flop. Turn is a K making a 2-flush. I bet 1200. Villain raises allin for 7200 more in addition to the 1200. Should I call? I know the raise OOP and the flop check might be questionable.