All I know is about the worst damage I've seen in street drifting mishaps are bent wheels and suspention pices; Two events on that track = 4 cars damaged with one being totalled... The street looks safer to me than that track.
I'm glad you had fun, but I'm sorry, The LAST place I would pick for a drift spot is a oval track like that. What was wrong with the parking lot style drifting dg trials put on at the same location?