Flop decision

[Absolution]

I've seen this guy raise 8To on the button after a middle position player limped in. He then bet the flop and called down every street with middle pair 8s. Raise or just call this flop?

PokerStars 0.50/1.00 Hold'em (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with Q[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls, CO calls, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (4 SB) T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, Hero...