I would think it might be a prop failure as well as what others said. Just based on that footage, it pretty much looks like what happens when a prop flys off. If you have a little cheap quad this happens all the time with the cheap replacement props. Not really related but they get loose and just pop off, and when it does the quad will do a flip and spiral into the ground. I had some carbon fiber props for my P2, not DJI but some aftermarket ones. The manufacturing tolerance wasn't so great, 3 of the props seemed fine, one had a weird thread issue. I stopped using them after a few flights cause I didn't want it breaking off mid flight.