Ok, so i'm pretty much as much of an amateur as you'll find regarding pool, but wouldn't it be much simpler to hit a combination shot there? That said, very impressive and something I wouldn't even think to try.
One issue with shooting the combo is he would be playing long shape on a rolling ball, perhaps as much as 2 rails.
I sure he avoids getting shape on rolling balls as much as possible.
Still a pretty gutsy shot, got a little lucky with the shape.