He’s on the rear brakes, and the rear was skipping compounded by how the wheel is pogoing usually means his suspension adjustment is way off.
Also look at where he is looking, he panic and looking dead at the very thing he is trying to avoid.
2 basic rule about riding: 1) Look where you want to go. 2) when you get to a turn, TURN! As long as you are on the pavement you still have a chance.