A well executed steal / re-steal

I realize that UTG+1 is smart enough to realize there's dead money in the pot. What he doesn't realize is that I'm just as smart. He's trying to pick off the pot from out of position against 2 new players. I had been sitting quietly the whole time and 4x it from in position. I'm actually surprised to see 1 caller. The only logical flop move for me to push, which gets the one caller off of whatever hand he had.

Full Tilt Pot-Limit Hold'em, $0.25 BB (8 handed) - Full-Tilt Converter Tool from http://www.flopturnriver.com

UTG+1 ($20.47)
MP1 ($22.40)
MP2 ($15)
CO ($50)
Hero (Button) ($14.74)
SB ($28.37)
BB ($15.93)
UTG ($15.50)

Preflop: Hero is Button with 6d, 3d
1 fold, UTG+1 bets $1, 1 fold, MP2 calls $0.75, CO calls $0.75, Hero raises to $4, 3 folds, MP2 calls $3, 1 fold
MP2 & CO have just posted their blinds to enter into the game, which is why, when they call UTG+1's bet, they only need to call $0.75.

Flop: ($10.35) Kc, Qh, 3c (2 players)
MP2 checks, Hero bets $10.35, 1 fold
I could have any two cards here, it doesn't matter. If MP2 isn't going to value bet with a fairly scary coordinated board (2 clubs, 2 broadway cards), then he missed the flop entirely. Moreover, the pot is about equal to my stack size. Anything less than pot potentially opens the door for him to call and I do not want to give him any odds to call.

Total pot: $10.35 | Rake: $0.51

Results:
Hero didn't show 6d, 3d (nothing).
Outcome: Hero won $9.84