Bet this Flop?

[Hoss Ballgag]

Cryptologic
Limit Holdem Ring game
Limit: $1/$2
9 players
Converter

Pre-flop: (9 players) Hoss Ballgag is BB with A[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/diamond.gif[/img]
3 folds, MP2 calls, 4 folds, 4 folds, <font color="cc3333">Hoss Ballgag raises</font>, MP2 calls.

Flop: K[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/heart.gif[/img] (4.5SB, 2 players)
<font color="cc3333">Hoss Ballgag should do what?