That sucks, man. Glad it would seem that you are ok, though.
I remember a post of yours before asking about upgrading to something like an R8/911/etc. I know you've had your Z for some time and have been able to enjoy it on track, so I feel like it'd be better for you to collect the insurance payout and move on to a new challenge. Whether it's a used 911 or maybe a Lotus Exige, there's a lot out of good stuff out there for you to try. Think about it.