JALK....Sorry to hear about your ddd and the failure of the epidurals to work. I am one person who knows what you are going through.
I have heard about spinal stretching, which increases space between your discs and eases the pressure on the nerves. I have not tried it yet but thought I would give you a headsup.
I also took a discogram last year to see which of my discs were involved so that I could undergo spinal fusion surgery. Unfortunately, the discogram showed that the discs involved were in this order (bad-good-bad) and the surgeon told me that the fusion wouldn't hold three discs in place.
By the way, the discogram was the most painful procedure I have ever had and that includes being shot during war, four major operations, kidney stones and various broken bones.
So, I am now practicing pain management and trying different approaches. I just hope I don't have to go back on pain meds.
Good luck, I hope you find some relief and, if you want to email me with questions, I will send you my email address.