Arc on the backswing?
 

Ok, I have 1 more question.

The right forearm traces the plane line through through through the ball! Thus it is not important to do any tracing during the backswing?

I ask this because it seems much more difficult to get the clubhead to cover the golf balls in the photos during Start Up unless your right hip and shoulder clear a lot.

Through the ball is not a problem because there is more room.

If one is experiencing this are they doing something incorrect?