Flopping Middle Pair - What to do ???

[Gammonster]

1. Unless the game was different than what I normally play in, I'd tend to raise w/ AJo in your position

2. I'm learning here as well, so if anyone can offer insight to this line of reasoning, please do so, but I'd check.
a. There are 4 other people, in the pot, and I'm guessing someone might have a Q.
b. However, since there is a flush draw, and you mentioned the habits of MP3, there is more incentive to bet out, for you are more likely to be called with a second best hand.
c. But if you check, and face a raise, and a reraise, I think you can fold.
d. Depending on who raises, if there is only one raise, you could check-raise and punish those draws.
e. If there is a free card, you are in a much better position to know that your jacks are good, and if the turn brings an innocent baby, anyone on a draw is getting worse odds. If the turn shows another spade, you can check and fold against the likly flush, if some one bets.