Hi Jim, Well, it sounds like your PT is on the right track. The first thing you need to do is postural corrections. In my experience you could start with several really simple exercises to re-instate your rhomboids as a core staabilizer then add some chest and shoulder work. Eventually and slowly while you're in rehab you can begin to grow your workout to balance the tension, strength, over your entire core. Just by balancing the tensions thru aligning the body you will often see profound results. I have a number of exercises I use with my golfer's and their imbalances but like tincup I would need to know where the symptom occurs and when. I would complete the physical therapy protocol while doing some small torso workouts with light weights and strict form. Once you are released you can begin to engage in what is popularly called post rehabilitative for a period while you redefine your golf game.
Inevitably things will change when you change the agreements your torso and your extremities make as you improve your posture. Within a short adjustment period you should see many more benefits than frustrations. Once you'be completed PT I would love to see where you think you are and I would be happy to pass along some exercises. As always I really believe in the tried and true lists I have on earlier threads. I think I'll put these up on a thread all their own for easier reference. Good luck and patience. Vik