Went back to the PT for a check on Drifter's healing progress yesterday. She said he looks great and he's cleared to start running around a bit more. I won't do any agility or hard turns or full extension running until next Monday, but I don't have to confine him to a leash all the time either. He'll be so happy to run a bit:-)
He basically stretched perfectly and she got no pain reaction from anything. His neck was tight for some reason, but that was it. Yay!