NLTRN - Very weak cbet against all-in status shortie

[xSCWx]

He has been very passive player but he has reached that point where he likes to shove. I assume he has reached a point where he feels a little more comfortable (stack-wise) because he has been limping hands lately. His preflop call here preflop I assume is weak.

Full Tilt Poker Game #3807741321: $55 + $2.50 Heads Up Sit &
Go (29002375), Table 1 - 20/40 - No Limit Hold'em - 21:49:14 ET - 2007/10/09
Seat 1: sponce257 (470)
Seat 2: xSCWx (2,530)
xSCWx posts the small blind of 20
sponce257 posts the big blind of 40
The button is in seat #2

*** HOLE CARDS ***
Dealt to xSCWx [A[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/spade.gif[/img]]
xSCWx raises to 120
sponce257 calls 80

*** FLOP *** [7[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img]]
sponce257 checks
xSCWx bets 90

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My thinking is that regardless of if I do 90 or 160, he has to dedicate his whole stack in order to play the hand.

Is there anything better to do?