Wow, you were very lucky to miss the pole!
The video reminds me of a similar mishap that I had about 6 months ago. I managed to stay upright by putting a foot down, but was moving pretty fast down a bridge and I broke my big toe. Two weeks later, I had to do an emergency stop when a cyclist ahead of me decided to stop for no reason, and I came down hard on the same toe
Hope you heal quickly and thanks for sharing!