Congrats!! It was time somebody else started doing it. Well, I think Dale told me he can do it. And so does Pulp
I just looked at the tutorial clip and on that one I do lower the hand to control it. I think I do that specially with the HP. But it can be done finishing with the top spinning on the hand kept high. I created the trick using a sidewinder and that is how I liked to finish. The main problem is that if you do that it tends to stay bound on the string and it is not as easy to continue with other tricks.
I recall that soon after I created it, Dale asked for suggestions for tricks for the compulsories and it was one of my suggestions
The original name is
staircase to heaven but because of the song many players started calling it
stairway to heaven and I pretty much gave up.