Some things don't add-up, timeline-wise in this video.
First, he can barely walk w/o the canes early on, with apparent very shaky balance.
Then secondly you see him doing some rather complicated Yoga moves, unassisted, legs splayed and alternating 1 arm at a time over his head, which would only throw his balance off even more.
He complains of chronic back and knee problems, yet falls repeatedly, which seems would only exacerbate these problems.
Then you see him apparently unable to put 1 foot in front of the other, falling flat on his face.
I call bulsh!