While I can't see what the drivers feet were doing. (Trailbraking, gas, both? neither?) He did enter a bit early for most cars. Curiously the rear steps out fairly early, combined that with the front tires getting an increase in grip as you climb the hill, the rear further "lightened" up and around she came... So I would summarize as Too Fast and Too Early.
I've had the incredible luck to spin on that hill and not contact anything.. Just a nice 360, put it in first and motor away. Clearly others aren't so lucky
