Kurt - I've hurt my back a few times fallng off of roadracing motorcycles. Oddly enough, the best therapy is riding one of those torture rack racebikes again. I think the strain on my back builds up the muscles, stretches them, and strengthens them. If its at all bearable, something akin might help. I find that, when you have to move or run off track, you do, and work whatever muscles it takes.
I'm not a doctor, yada, yada, yada...