Good Laydown or Not??

Well, this guy hadn't gotten out of line and I didn't have a low draw with my set so I laid it down... Good decision or not??

PokerStars Game #9847404224: Omaha Hi/Lo Pot Limit ($1/$2) - 2007/05/10 - 19:35:38 (ET)
Table 'Constantia II' 6-max Seat #2 is the button
Seat 1: WPTunderdog ($180.50 in chips)
Seat 2: ratttt111 ($182.85 in chips)
Seat 4: geezus ($108.20 in chips)
Seat 5: trouble1999 ($46.90 in chips)
Seat 6: labshepguy ($47.35 in chips)
geezus: posts small blind $1
trouble1999: posts big blind $2
*** HOLE CARDS ***
Dealt to WPTunderdog [3c 9h Ac 9d]
labshepguy: calls $2
WPTunderdog: calls $2
ratttt111: calls $2
geezus: calls $1
trouble1999: checks
*** FLOP *** [5c Qd 9s]
geezus: checks
trouble1999: checks
labshepguy: checks
WPTunderdog: bets $9.50
ratttt111: calls $9.50
geezus: folds
trouble1999: folds
labshepguy: folds
*** TURN *** [5c Qd 9s] [3s]
WPTunderdog: bets $20
ratttt111: raises $67.60 to $87.60
WPTunderdog said, "u got a set?"
WPTunderdog: folds
ratttt111 collected $67 from pot
ratttt111: doesn't show hand
*** SUMMARY ***
Total pot $69 | Rake $2
Board [5c Qd 9s 3s]
Seat 1: WPTunderdog folded on the Turn
Seat 2: ratttt111 (button) collected ($67)
Seat 4: geezus (small blind) folded on the Flop
Seat 5: trouble1999 (big blind) folded on the Flop
Seat 6: labshepguy folded on the Flop