bottom two and oesd vs hyrer agro jamming the flop

[sc000t]

Guy has been playing extremely agro but nothing out of control. Raised like 96% of the buttons and have seem him betting his big hands and draws the same.

PokerStars Pot-Limit Omaha High, $1.00 BB (2 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($231.25)
BB ($105.75)

Preflop: Hero is Button with 8[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to $3</font>, BB calls $2.

Flop: ($6) 7[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $4</font>, <font color="#CC3333">BB raises to $17.7</font>, <font color="#CC3333">Hero??