Bad fold or good laydown in PS Sunday Warmup?

[TripleNet]

If it had not been the only other stack at the table that could bust me easy push on flop.


PokerStars No-Limit Hold'em Tourney, Big Blind is t600 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB (t24500)
Hero (t39600)
UTG (t13400)
UTG+1 (t7200)
MP1 (t7350)
MP2 (t8400)
MP3 (t10225)
CO (t13576)
Button (t38225)

Preflop: Hero is BB with Q, J.
[color=#666666]6 folds</font>, [color=#CC3333]Button raises to t1800</font>, [color=#666666]1 fold</font>, Hero calls t1200.

Flop: (t3900) J, 9, Q [color=#0000FF](2 players)</font>
[color=#CC3333]Hero bets t1800</font>, [color=#CC3333]Button raises to t3600</font>, Hero calls t1800.

Turn: (t11100) 9 [color=#0000FF](2 players)</font>
Hero checks, [color=#CC3333]Button bets t8200</font>, Hero calls t8200.

River: (t27500) 5 [color=#0000FF](2 players)</font>
Hero checks, [color=#CC3333]Button bets t19000</font>, Hero folds.

Final Pot: t46500