Overheated on track - now what?

[infernosg]

So I went out and fiddled with things again; this time I took some video. I don't know how to embed these so direct links will have to suffice.

First, here's the behavior when cold:
https://picasaweb.google.com/lh/phot...eat=directlink

Next, fully warmed up:
https://picasaweb.google.com/lh/phot...eat=directlink

Last, here's after revving the piss out of the engine. Notice the coolant level:
https://picasaweb.google.com/lh/phot...eat=directlink

Just for giggles, I think I may have found an exhaust leak. Yes, I know I should not be revving the engine like this:
https://picasaweb.google.com/lh/phot...eat=directlink