Hey everyone....been lurking for a month or two and love the site

Anyways quick background, been playing for about three months. (all at PP) I play SNGs at the 10+1 level and ima little above break even after 200. (up about $200)
I'd say im avg at MTTs and am easing my way into them. I've had two FTs (5th and 7th) and 2 13ths with a handful of other moneys.

now that all that's outta the way here's my question about a hand from tonight that's bugging the crap outta me.

95 people left pays to 80 avg chip stack is around 7500.

Only reads i've got on munks are an all in call of a shortstack when he held Aces and a folded check raise attempt that went wrong, the latter of the two reads obviously got me thinking.......

#Game No : 3015929897
***** Hand History for Game 3015929897 *****
NL Texas Hold'em Trny:17301631 Level:9 Blinds (200/400) - Thursday, November 10, 20:27:31 EDT 2005
Table Multi-Table(509708) Table #5 (Real Money)
Seat 7 is the button
Total number of players : 10
Seat 1: Buz794 ( $16158 )
Seat 2: wormdancer ( $9935 )
Seat 3: rooneysheeb ( $7496 )
Seat 4: Quinners ( $2990 )
Seat 5: Hollywood85 ( $9140 )
Seat 6: shady_phenom ( $6520 )
Seat 7: Masyanya85 ( $4204 )
Seat 8: ccard222 ( $18777 )
Seat 9: FATHOMS3 ( $4575 )
Seat 10: munks222 ( $11602 )
Trny:17301631 Level:9
Blinds (200/400)
** Dealing down cards **
Dealt to shady_phenom [ Js Ad ]
munks222 raises [800].
Buz794 folds.
wormdancer did not respond in time.
wormdancer folds.
rooneysheeb folds.
Quinners folds.
Hollywood85 folds.
shady_phenom calls [800].
Masyanya85 folds.
ccard222 folds.
FATHOMS3 folds.
** Dealing Flop ** [ 6c, As, Ah ]
munks222 checks.
shady_phenom bets [2000].
munks222 raises [4000].

??? Where to go from here?