I doubt the track caused your spun bearing or bad wrist pin but I hope you are able to make repairs for very few dollars. My friends 67 vette spun a bearing setting in the driveway while he was setting his timing. Sometimes things just break!
I have done the same thing at Texas Motors Speedway Track near Ft. Worth, Tx., but mine was strictly due to me trying to go faster by replacing my rev limiter chip with a 7000 RPM chip. I only got up to 159.725 mph before my engine spun a bearing while turning 7000 RPM. At that time I had a FE 428 CJ that was not built to go much over 6000 RPM and I wasn't watching my
oil pressure which fell to near zero coming out of the roval onto the Nascar turn 3. After passing several cars in turn 4 and the straight a way my engine got real quiet! It let go before I got to turn one and onto the roll back went my car.
Clois