Keep up the good fight, Sean. The more I deal with the medical profession, the more I become convinced it is as much black magic as it is science. Try some glucosamine-controitin supplements (I know they're meant for joint health, but your spine is a series of articulated bones, lubricated by cartilage). Another thing to think of is doing what Hemmingway did for his back pain- he had a desk made so he could work standing up. There's actually a whole school of workplace design taking hold that is getting rid of the traditional desk chair and implementing stand-up workspaces because they're healthier and in many ways LESS stressful.