With the VCS on. The car will do some weird chit. Going through a turn and the rear starts to drift out. The VCS will apply a rear brake to straighten the car out. 9 times out of 10 when it happens. The car is pointed in the wrong direction.
First time it happened to me. I was doing a trackday with an instructor with me. He accused me of hitting the brakes. I told him it wasn't me but the car. He didn't believe me until I showed him the video. My foot never touched the brake pedal. It was still on the gas. From that point on. It has been off. Now I can shut the YAW sensor off completely.