If your spinal cord is truly "flattened" and there is documented neurological deficits on examination (meaning objective weakness and/or numbness), then spinal cord compromise is a major concern that needs to be addressed. It's difficult for me to give you accurate advice as I personally have not examined you or reviewed your films. But I would lean more towards surgical options if the spinal cord is showing evidence of damage. Nerve root compression is important, but the "flattened cord" is more worrisome. Talk to your NS again, or consider getting a neurology doc to do a good exam. Best of luck.
thanks