Tough call! My gramps would totally have known what to do, I'm just a dilettante.
I'm worried about the tree dying back later from the exposed cut, however you prune. I fear the correct thing to do w...
Sorry for my delayed response, but thank you very much for your time and thoughts on how I can save the tree. I pruned it back pretty aggressively, so we shall see. Again thank you for your time.