VG,
Points well taken, but honestly the one about "the line was too long" is pretty cheesy (IMHO)...
Get there early enough and it won't be an issue would be my response...
I've heard Moroso can be a Shithole of a track and I would hope that you've been to better tracks (or at least when they've prepped Moroso, I know it's got bite, it broke a set of hardened axles on my friends GT last year).

I've seen people toss their vehicles at both street races and track races.. Biggest difference to me? Track race.. safety crew on scene very quickly, on site ambulance, etc..
Street race, every one hauls ass to get out of there before the cops come, very few stay behind to help the people (if needed). Again, my personal experiences.....

Personally I prefer the prior, but that's just me.