Instant All inn first hand

[Nudge]

So I had this really weird hand today.
I was playing with sharkscope while the game was loading
and when i alt-tabbed back, he was already All inn!
Should this be a fold? What could he be pushing here?

Hand T4-54999720-1, Started at 11/30/2007 6:26 PM (EST)
Seat 1: mum92 (1 500 in chips) (on the button)
Seat 9: Powernudge (1 500 in chips)
*** Blind Bet Round *** :
mum92 : Post Blind (10)
Powernudge : Post Blind (20)
*** Pre-Flop *** :
Dealt to Powernudge: Ad Qh
mum92 : Bet (1 490)
Powernudge : ?