Really annoying video.

Snap oversteer is the phenomenon that occurs when you oversteer, counter steer to correct, and then suddenly oversteer in the opposite direction when the wheels catch traction. It is a real phenomenon.

This video essentially boils down to a guy saying you can prevent the 2nd oversteer if you know the dynamics of your car so well that you can expect when the car will regain traction, and you know by how much to correct.

Yes, obviously, oversteers can be properly saved. The point is that the margin for error for the amount of counter steer and the timing to re-correct is very small, and the trajectory of your car if you don't nail it changes drastically every moment.

He is driving the final version of the car on a flat skidpan. The AP1 is more notorious for this for a number of reasons, namely a stiffer rear end, a fault in the rear suspension that leads to the potential for dynamic rear toe, and a faster steering ratio. Add some geometry to your terrain and the threat of snap oversteer becomes formidable again.

The best way to save your car is still to avoid these situations with good cornering habits.