ABS failure at BMP

TLMotorsports 151 BRZ #Full19, ABS failure while on track at Barber Motorsports Park.
Video starts at T14, you will hear some tire lockup at T16 which was the first sign something was amis as the Traction Control Light started blinking when it happened, which is very odd as in Track mode, all traction/VDC assistance is turned off. Then in T1 everything is OK, no lights on so I start to push again, then as I reach the brake zone for T5 and get on the brakes, full lockup/pucker factor. Thought I was going to tap the Cayman so I took the off.