The move sucks: uke movement, grabby.
This is pretty much the wrong forum (I'm not sure if this goes anywhere here, but the closest I can come up with is support)
I doubt that's you in the vid: different name, and the guy has a heckload of expensive colors, textures and texture trails.
That said, you can do it pretty easily: watch closely which joints he uses in which order, and copy that. Suck it up, it's not getting any easier.