Getting frustrating

Bugsy seemed another bit better today - he is completely obsessed with digging for moles - my guess he's dug up 10-12 holes today all while onleash and with either myself or Steve doing our best to keep him from digging!
If we get him away from the mole hunting he quickly shifts to diving into the rabbit den area.
I literally had back spasms after our morning wander.

This is how he looked on our second trip around the yard

He also was able to enjoy sitting outside for a bit with Steve

So why am I frustrated??
Well for some reason the range of motion exercises hurt him badly and he will do anything to not do them. Its awful and I can't understand why. I watch him use the leg in ways that put his leg into the same position and he does that without pain yet if either of us try to do the range of motion stuff he acts like we are killing him.
I figure I am going to have to go see someone to do them and get it off my back.
I really don't want him to lose range in his elbow and shoulder because we couldn't get these done