Watch the crowd scatter!!
(Give this a minute to download...it's an embedded movie player)

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Makes you feel carsick seeing that. The rego on the tail is australian, and it looks like it's still current.

i have no idea what kind of aircraft that is, but it is Aussie rego... and i do recognise 1 aircraft in the background though

Like a bad rodeo!

lucky nobody got caught up in the prop, a few more seconds in straight run that may have gotten airborne.

Ughh, ugly.

I was on hand last year for a rodeo starring a runaway handpropped Supercub, turned out OK so it's a funny memory now but it coulda been real, real ugly.
We had a runaway handpropped Stinson at our airport years ago that ran right into the back of another guy's van. New (used) FWF onto the Stinson squared it away at reasonable cost, and old POS van so no big deal there either-- but again, coulda been real ugly.
I'm not down on hand-propping airplanes, but you do have to have your act together. Both cases cited were a case of cranius anius -- that's latin for "head up ass" for the lingually-challenged among us.

Eric