BIG blocks and 8 3/4 dont go, lol

It looks to me (looking at the the that are not broken... that the ring gear failed first. The wear surface of the teeth look like crap. I'd bet the teeth broke after getting hot at the end of the run. The ones I've seen with cap issues had much worse damage and did it right as the power was applied in 1st of second. BTW, you should also pull the trans and check the sprague for damage.