Life ain't fair, neither are skate injuries!
Heal Us here in Marin County teaches a massage technique called Neuro Muscular Reprogramming. This therapy will get all of your muscles to work, correctly. I am convinced by the evidence based nature of NMR.
Here is a set of exercises for the back muscles and spine. These are ways to re-activate muscles that have become weakened or deactivated by injury. Lumbar/Core Strength and Stability Exercises.
Obtain a neodynium N42 disc magnet and use a compass to determine the positive side. Mark the positive side with paint if you like. Tape the negative side down to the problematic/painful spot on your back using bandage tape. It is small enough to wear during the day or night. This is a healthier alternative to Ibuprofen for inflammation.
Keep trying to find a good Physical Therapist. Do the exercises 3-4 times per week.
Identify your own poor posture habits and the furniture and activities that cause problems.
Nothing aligns my back better than crossed-legged yoga meditation. Learn how to work with your chakras and strengthening/enhancing their corresponding colors.