stand on the outside corner of the turn and as he gets ready to turn, PUSH HIM, sending him into a horizontal trackstand. Then yell at him saying, "I said lean! Why don't you f***ing listen to me you stupid piece of s***. Now get up and lean!!!"
or you could practice outside the trail and have him build up confidence on the street or his driveway.
or you could practice outside the trail and have him build up confidence on the street or his driveway.