You have come up with a reasonable plan the busa would probably benefit from passive release & icing.
Either way you are focusing on MRI results but not why you have this problem.
Really I would be looking at your pelvic tilt you will either have a posteriorly tilted pelvis (tight buttocks and flat tummy) and a reduced lordosis or a anterior tilted pelvics (weak buttocks and weak abs)
My bet is the former.
Either way it's a complicated condition that will require specific massage release, pelvic manipulation, rehab and relearning of a no doubt disturbed gait pattern. All this will need constant guidance and reviews as well as hands on therapy for long term recovery.
Hope that helps