That range of motion stuff is a killer. I remember 5 years ago or so after rotator repair. Ouch!
the PT would apologize for the pain while she ran it through "range of motion". I told her to wear leather skirts, bring a whip..whatever, just git er done and let me deal with the pain.
the end DOES justify the means, amigo! Stay in the limits of your doc's orders, but what you put in now comes back in dividends!