Bottom Two Pair - One horrible opponent, one decent

UTG is absolutely horrible, like, really really bad. SB is actually kind of decent, but I don't respect him much. Considering stack sizes, is there another way to play the flop?

Ultimate Bet No-Limit Hold'em, $2 BB (5 handed) converter

BB ($190.35)
UTG ($84.45)
Hero ($432.25)
Button ($36.90)
SB ($176.25)

Preflop: Hero is MP with 6[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img].
UTG calls $2, Hero calls $2, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: ($8) K[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, UTG checks, <font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">SB raises to $15</font>, BB folds, UTG calls $15, <font color="#CC3333">Hero raises to $68</font>, <font color="#CC3333">SB raises to $78</font>, <font color="#CC3333">UTG raises to $78</font>, Hero..