Had the same exact problem 3 weeks ago in my wife's track car (stroked LT4)
She was shifting to fourth on the front stretch at VIR when it came apart.
She shut it down immediately and got a tow back to the paddock with no further damage.
I had just installed it from Carolina Clutch and it lasted just over 200 track miles.
The clutch I removed was an 8 year old Carolina Clutch with thousands of track miles on it.
Tom at CC explained the problem (quality issue), apologized, and took care of a correct replacement disc.
BTW we are running an aluminum Fidanza.
From what I understand, the quality issue pertains to the backing plate.
There needs to be a solid backing plate ring, not just the segmented spring steel shown in the photo of ours below.
