Pushing off strassa pushing me off

[bboy_]

PokerStars No-Limit Hold'em, $20 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($2748.25)
Hero ($6022)
UTG ($2396)
MP ($2016)
Button ($2136)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">SB raises to $80</font>, Hero calls $60.

Flop: ($160) A[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $100</font>, Hero calls $100.

Turn: ($360) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

River: ($360) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $280</font>, <font color="#CC3333">SB raises to $720</font>, <font color="#CC3333">Hero raises to $5842</font>

I'm 80% sure that strassa is hoping to push me off my kicker on the AA66K board. His line is against AK or better without betting the turn or the river.