I just read the liked article. While the author does a great job of explaining how this can happen when the front tire is off the ground, he fails to mention the other equally frequent reason - low front tire pressure.
Several years ago, I was on the wrong end of a 'slapper. When I woke up, I was in the ditch of the local highway with an obviously dislocated shoulder and some other broken broken bones. After careful review, I was victim of a 'slapper caused by low front tire pressure and a bump on the road. Fortunately I do not remember much of it, because what I do remember is some of the scariest moments in my life and at times adversely affect my riding pleasure to this day.