I have a question if you don't mind, I'm just trying to get things straight in my mind about a lot of things people take for granted. This tree looks like it is doing fine, and showing no ill effects that I can detect? However; you stated " This one had all roots cut about 20" dia around as well as sharp shovel cut under at about 8" mid summer last."
That sounds like something I would do. I know in the past from my exposure to Manzanita, when I lived in California, almost no one had luck digging them up with the exception of some of the very young ones. I have always felt that many times the statement that it can't be done is really saying it can't be done the way it has always been done.
The standard time line for transplanting or digging anything up has always been early Spring at or before bud break. You virtually did this in the middle of the Summer and it seems that has worked. I have harvested a good deal of criticism for doing root work, on Mugo Pines and other things, in the Summer from the many who claim I am doing this wrong. There is an issue that I think needs to be addressed: Maybe what we think--- and what we have been taught about this issue,--- is all wrong? Maybe what we think happens to the tree in the Spring when we repot/transplant is not what we think it is ---and the reactions to it are a misinterpretation of observations and outcomes. I don't claim to know anything but I do know what has worked for me in the hundreds has got to say something. I believe you have stumbled on something as well. Good luck when you finally remove it from the ground.