if i put him on a 4, can i fold this? (50nl)

------HAND 1------
Game #1296046493: Hold'em NL ($0.25/$0.50) - 2005/11/11 - 15:03:08 (ET)
Table "Kapelle" Seat 1 is the button.
Seat 1: Scampjack ($28.25 in chips)
Seat 2: 8u88leb0y ($50 in chips)
Seat 3: Rikbin ($54.70 in chips)
Seat 4: firewire ($52 in chips)
Seat 5: Rullings ($29.20 in chips)
Seat 6: dMechaniC sits out
Seat 7: jasonchao ($11.35 in chips)
Seat 8: iceberg38 ($24.50 in chips)
Seat 9: paroar ($54 in chips)
Seat 10: Emper0rr_ ($46.75 in chips)
Rikbin: posts small blind $0.25
firewire: posts big blind $0.50
----- HOLE CARDS -----
dealt to firewire [5c 2s]
Rullings: calls $0.50
jasonchao: folds
iceberg38: folds
paroar: folds
Emper0rr_: folds
Scampjack: folds
Rikbin: calls $0.25
firewire: checks
----- FLOP ----- [4d 4c 3s]
Rikbin: checks
firewire: checks
Rullings: checks
----- TURN ----- [4d 4c 3s][8c]
Rikbin: bets $0.50
firewire: calls $0.50
Rullings: folds
----- RIVER ----- [4d 4c 3s 8c][6c]
Rikbin: bets $2
firewire: raises to $5
Rikbin: raises to $12.50
firewire: calls $7.50
----- SHOW DOWN -----
Rikbin: shows [6h 4s] (A Full House, Fours full of Sixes)
firewire: mucks hand
Rikbin collected $26.15 from Main pot
----- SUMMARY -----
Total pot $27.50 Main pot $26.15 Rake $1.35
Board [4d 4c 3s 8c 6c]
Seat 1: Scampjack (button) folded before Flop (didn't bet)
Seat 3: Rikbin (small blind) showed [6h 4s] and won ($26.15) with A Full House, Fours full of Sixes
Seat 4: firewire (big blind) mucked
Seat 5: Rullings folded on the Turn
Seat 7: jasonchao folded before Flop (didn't bet)
Seat 8: iceberg38 folded before Flop (didn't bet)
Seat 9: paroar folded before Flop (didn't bet)
Seat 10: Emper0rr_ folded before Flop (didn't bet)