I didn't watch it since I know that it can be done and I figured it would be long and boring. As well, as this has recently been discussed in another thread.
I do hands free masturbation a lot. You Kegel using the BC muscles. It can be done when in a soft or erect state. But, you have to have a lot of patience since it isn't something that is done quickly.
It takes a very long time to do it when soft...it usually takes me at least 45 minutes to an hour. But, the final orgasm is usually a dynamite one, and well worth the energy and time to do it!
When doing it in an erect state, it takes less time, about 10 to 20 minutes and the orgasms are just regular ones unless you have been edging for a long time (couple of days) beforehand...then they are exceptional!
Good Luck..and ENJOY!