($22r) TT on undercard flop vs action
 

When the BB bet I intended to raise him all-in but the raise in front of me gave me pause. Is folding here weak-tight?
PartyPoker, Big Blind is t100 (8 handed) Converter on pregopoker.com

UTG (t5141)
UTG+1 (t1500)
MP1 (t1844)
MP2 (t2975)
Hero (t3225)
Button (t1190)
SB (t2225)
BB (t1900)

Preflop: Hero is in CO with T[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/heart.gif[/img]
UTG calls t100, <font color="gray">UTG+1 folds</font>, MP1 calls t100, <font color="gray">MP2 folds</font>, <font color="red">Hero raises to t400</font>, <font color="gray">Button folds</font>, <font color="gray">SB folds</font>, BB calls t300, <font color="gray">UTG folds</font>, MP1 calls t300

Flop: (t1350) 5[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img] (3 players)
<font color="red">BB bets t400</font>, <font color="red">MP1 raises to t1444 (All-in)</font>, Hero ???