Hi Mathew,
That is the right video. There is nothing, in my experience, that would allow that kind of push to achieve that kind of result. Nor does the reaction of the uke look in any way genuine to me. Still - it could just be that my lack of experience is precisely the issue. Until I actually meet someone who claims to be able to do this kind of thing, I’ll never be able to say for absoloute sure… so, live and let live.