Moving macro percentages around too much isn't going to help you. I would suggest keeping them fairly balanced, with protein being on the higher side. Maybe 40P-30C-30F. Upping the protein won't solve the muscle cannibalization by itself. Body energy requirements have to come first. Muscles aren't terribly high on the "importance" list. There is a whole lot of organs to take care of, respiration, etc. Anyway, keeping your carbs normalized should give your body adequate (and useful) energy supply. Fats as well need to be present for hormone production, cushioning of joints, etc. Keep the macro's balanced and drop total cals a little bit at a time until you hit a comfortable level for losing fat.

I will also say that I'm not sure I follow along with your dynamic exercise reference.