I'm no guru but have been trying out this putting pattern since visiting the swamp. Basically, the stance and setup are just like that of a full stroke. Right forarm on plane, extensor action, etc... The main differences from my regular setup are zeroing out accumulator #3 (ie. put the grip under the thumb pad instead of the heel pad), and the ball is more forward than usual for me (just behind lowpoint). It feels amazingly natural, and it works great for me...setup, stroke it, keep those hands movin', listen for the ball hitting the bottom of the cup.
Basically Yoda is making a putting stroke which complies with his primary swing pattern. In it, he sets up so the ball is struck at, or just prior to the low point of the swing, which is just opposite of his left shoulder. The left shoulder is the top of the swing radius rather than the spine. You will find that in nearly every swing, the left shoulder to clubhead distance defines the full radius at low point.
There are many styles of putting which are geometrically sound, one of the most common is a hands centered, shoulder rock with the arms and hands frozen. This puts the center of rotation around the spine and is also very effective. But why should someone have to change their stroke pattern when they walk up on the putting green? Why not use your primary stroke pattern with the flat stick?