Similar thing happened to me at a track day. Luckily I had insurance, as the damage was around £2500 which is a ton of money where I'm from.
The a-hole in the Scooby (2.5, not the STi) just pitted afterwards, and drove straight out the gates, and didn't come back... Thankfully me and my co-driver weren't hurt, and I was still able to drive the car home.
Had similar thoughts with regards to wife and children though.. a very scary moment indeed...
Guys need to deflate their egos and learn to accept getting passed... And more severe punishment needs to be implemented if u ask me.
Rant over...