Definitely no holes last night; the track was about as perfect as it could be.
That said, I think those who flipped will tell you that their accidents were of their own doing. If you ask me, I believe almost everyone last night was getting into 3 too soon, making an early apex, causing them to struggle to get the car turned through 4.
Only a few guys seemed to get this figured out as they got more comfortable throughout the feature. They were: Windom, Memmer, and Grant. Go figure!