He turned the VDC off. He started the first lap with it off and after a few laps came in to pit and I guess turned the car off. As we know, when you restart the car VDC is re-engaged. He must not have realized it until getting into the turns so on the straight, he turned it off which is what you saw. That clip was only one lap out of a 20 minute long clip from the GoPro.
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