http://neuro-mancer.mgh.harvard.edu/...=212&SUBMIT=Go
I'm going to refer you to another forum I go to. When I hurt my back these people taught me more in a week or so than all the years of being an ortho nurse had.
To answer your question, yes I have seen people get better without surgery. I've also seen some get worse.
Try the MGH site. You do have to register, but it's a good place to get answers. And the answers are from the experiences of literally THOUSANDS of folks.
I go there to with the same screen name. So see you there.