a hand has got me thinking

[brettbrettr]

so, I played this hand last night against a solid 2p2er. I'm wondering what you guys think about it b/c it seems tricky as hell to me. This isn't the exact hand, but food for thought.

Anyways, hero has A9o in the bb. Live 4/8 game, I think we're 7 handed at this point. Could be 8, could be 6 but I'm pretty sure its at least 7.

Villan (brettbrettr) raises in UTG +1. Brett can be out of line, but seems to be playing solid hands tonight.

SB, a tight/passive type player calls from the SB. He hasn't been playing many hands tonight, stuck, running bad etc. His call is meaningful, brett thinks. Not sure if Hero agrees.

So, BB calls with A9o. (Thoughts?)

Anyways, 3 to the flop for 6 sbs: Ad2s3s

What's hero's flop plan? Bear in mind that Hero knows that villan will bet this flop with very nearly 100% of his holdings when checked to.