I know exactly how you feel.
Hey Billy,
You know that sharp ass pain that ran down your back all the way down to your ass? Sounds like to me that you have met my ex-wife. You may not have actually met her, she can cause that pain just by looking at ya. Man she's scary. I feel for you bro, she has been a pain in my ass for somtime now! LOL
But seriously, I would suggest a massage therapist but it appears that you have already been down that route. Good Luck. Hope that you do not have any more problems with it.
Tobey