Let's describe it like this: he paid for the complete wheel - so he uses it completely...
By the way: not knowing where this Video was made, I can tell you from "Vogesen" (do not know the name in english, it's East to the Black Forrest in Germany) that they have mountain roads where the surface of the Macadam is very similar to race tracks, so these angles are not that hard to reach...
… ok, and you have to be fast, because the cops know how to use their bikes in that area, too...