I observed this hand while playing a 500nl live game and wanted to know what you guys think. Effective stacks are 380, 8 people at the table. UTG is a regular at this game I am assuming. I have only played it twice and he has been there both times. My read on him from the last time we played was that he is a solid aggressive player. He seems to limp a little more than most internet players do, like a lot of live players do.

UTG limps utg and gets called by 5 people. The SB raises to 25 and UTG calls as does another limper. Pot is 115 going to the flop.

The flop comes out
SB checks
UTG bets 40
Limper folds
SB raises to 90 ( This c/r is horrible but I'm not looking for comments on this)
UTG pushes, 265 to call.

After tanking SB open folds 99. If your in that position and somehow make the retarded check/raise that he does are you calling a push here with 99?