Yeah you can actually make an unintentional spin over the curb while intentionally keep flooring the throttle to regain the lost position and keep bumping the car you've already hit to move it out of your way so you can continue racing. Intentionally you didn't wait for the car to return the position. Sounds like untintentional racing incident.
From where you know? You watched the reply to see the throttle input of the car that spun? Because in the video you cant see.