I don't know if I would be calling the raise with a2s. There aren't enough callers for the pot odds to play for the flush. You are dominated by any ace. And you could double up anyone that has an ace and an ace falls on the flop. Looks like a 6-way game? Unless maybe utg+1 raises every other hand. There was a limper so a decent player probably isn't kidding around. After the first call though you might as well call the bb's raise.

Post-flop play you might as well call it down since he isn't that deep. You were really calling for $48 on the flop I think, since he is going to push unless it was a bluff.