In the slow mo one sees the wheel turning forward in one instant - so its either a blocked wheel or max braking (without rider influence). Seems like some hardware/firmware failure induced by the bump/pothole short before - or its just some unrelated coiincidence? maybe a pebble stuck between shell and the casing, molten wires that shortened by the vibrations of the bump, a broken gyro, burned mosfets, or whatever else could have happened... but does not look at all like any norma