Cumulative Trauma WC injuries are VERY common. Time to find a new doc and potentially a WC attorney. Do not assume LTD insurance is a slam dunk without the support of your doc either! As for SSDI, it would be very difficult to be approved without the support of your treating doc.

You KNOW your doc is not treating you. Get a supportive one ASAP! Perhaps a good one could actually help you improve enough to return to work even. Who do the docs in your state send their own family members to when they have major spine issues? That's where you want to go.

A hint--you might need to travel to a larger city or one at least one far enough away that your new doc won't be contradicting a local colleague.