Thanks again for all the support, guys. I'm still keeping my appointment to meet with the neurosurgeon next week to hear what he thinks my options are, but right now I'm not inclined to have any kind of surgery. I went ahead, at my spinal/sports specialist's advice and had an epidural about a week ago (probably unecessary) and am continuing with PT sessions twice a week (more worthwhile but boring). I'm still doing my martial arts on a very restricted basis, and have quit running, but am trying to walk a couple of miles as fast as I can every day or so.
Actually, I seem to be recovering quite a bit, and contrary to my therapist's advice to quit martial arts and "all that other stuff you do", I really believe that WC is helping me recover. I'll check back in with you guys in another month and let you know how it's going.