100NL : KK with allin player, side pot action with A

[cbloom]

Pretty standard KK play, but shortie gets allin and I have a live side pot. I'm wondering how side pot play here is affected by the allin on the main pot.

Party Poker No-Limit Hold'em, $ BB (6 max, 10 handed) internettexasholdem.com
hand converter is messing up so bear with me

BB ($98)
UTG ($109.25)
UTG+1 ($98) (Villain)
UTG+2 ($30)
MP1 ($99)
MP2 ($0)
MP3 ($15.90) (Shortie)
CO ($61.50)
Button ($61.10)
Hero ($116.82)

Preflop: Hero is SB with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. UTG+2 posts a blind of $1. Hero posts a blind of $0.50.
UTG calls $1, <font color="#CC3333">UTG+1 raises to $6</font>, <font color="#666666">2 folds</font>, MP3 calls $6, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero (SB) raises to $23.5</font>, <font color="#666666">2 folds</font>, UTG+1 (Villain) calls $18, MP3 (Shortie) calls allin

Flop: 8[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>

Hero bets $24 , Villain folds


Villain has been pretty solid, so must have QQ or AK. Shortie has been very loose, so can have any pair or Ax or worse. Does betting here accomplish anything other than pay off AK ? Maybe I should just try to check it down? I may have to call bets since Villain may well bet a hand like QQ or JJ.