The Motard rider is Mr Sakuta who is one of the original founders of the sport and is also the chap that makes the 3 point sports bumpers that you will see fitted to most Gymkhana bikes.
All rotation and U turns will be done with the bars against the lock stops as that ensures that the rear wheel describes the smallest possible arc. Sakuta-san ensures the bars have unrestricted movement by making sure his elbows are kept up out of the way. Remember that the basic seating position is butt-back, knees-in, elbows-out and head-up.
Here is a great slo-mo video of Sakuta-san negotiating a rotation turn on his previous bike.
Dedicated to the wonderful sport of Moto Gymkhana