Inducing a bluff, have to call right?

[quarkncover]

Party Poker No-Limit Hold'em, $ BB (6 max, 5 handed) FTR converter on zerodivide.cx

BB ($94.65)
UTG ($92.75)
MP ($84.15)
Hero ($50)
SB ($45.45)

Preflop: Hero is Button with Q[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.25.
UTG calls $0.50, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $2.5</font>, SB (poster) calls $2.25, BB calls $2, UTG calls $2.

Flop: ($10) 9[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, UTG checks, <font color="#CC3333">Hero bets $6.66</font>, SB folds, BB calls $6.66, UTG folds.

Turn: ($23.32) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

River: ($23.32) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $15</font>, Hero [img]/images/graemlins/confused.gif[/img]