one brake failure?
unlikely on a new porsche. looks to me like he was trying to come off the exit, just going waaaay too fast. realised late and braked while turning right so the weight was on the front left corner. the inner rear (right) wheel would be unweighted so wouldnt leave a mark. you can see the rh track looks lighter than the left, even more so after it gets a kicker off that ramp.
the strange thing is no sign of ABS, pretty sure sport mode on porkers reactivates ABS if
both front wheels lock up