That sucks! But this is motorsport and as soon as you put a tire on the track driving at high speed bad things can happen. At least the owner was well protected in the car with the roll cage and there is no sign of damage on the driver's door.
I have seen worst at Infineon with one rolled mid 80's 911 (
) and a totaled brand new 350Z. Both drivers were ok.
BTW I love your targa
, I was contemplating buying a gorgeous light blue 1985 targa 4 years ago, but chicken out after test driving it. I needed a strong reliable car to use everyday and the brakes of that car didn't inspire confidence (maybe I am too used to modern brakes...).