Why hand would you put these people on?

I folded this hand preflop but curious as to what hand you would put these other guys on. I want to get better on putting people on hands. I know the guy that made that 11 dollar rasie got the other raisers to fold and i see that it would of been a third of the others stacks to call or around there.

Heres my qestions that i have. Do you think the guy who puts in the huge raise is on the flush draw so that if he gets called he can hope that he hits another spade and take down a huge put or do you think hes making it way expensive for anyone who has a flush draw ??


Poker Stars - $0.25/$0.50 No Limit Hold'em (8 players)
Poker Stars Hand Converter Tool from CardsChat.com
SB: $41
BB: $65.50
UTG: $23
UTG+1: $40.80
MP Hero: $66.60
MP+1: $50
CO: $57.60
BTN: $43.50
possborus - Sitting Out
Pre-flop: ($0.75) Hero is MP and dealt
UTG folds, UTG+1 raises to $1.50, Hero folds, MP+1 calls $1.50, 2 folds, SB calls $1.25, BB folds
Flop: ($5) (3 players)
SB bets $2.50, UTG+1 calls $2.50, MP+1 raises to $11.50, 2 folds, MP+1 returned $9

Its a set, two pair, or 10 j of spades. Most likely the set, since he reraised so much to get rid of the drawing hands and stacking the guy with AK, AQ.

stats?