Blown disk. It had been herniated about 3 years ago but went away. Since then, weight gain and loss along with different jobs and duties broke it down since then. Still fighting the worker's comp people. Should be settling soon.
Wow, same thing happened to me. I had have a blown disc. It paralyzed my foot for about 3 months but going to the gym and taking 4 months out of work helped with that. But since then I lost my insurance (that i had for a whole 3 months) and cant afford the surgery to remove it.
Best of luck to ya.