Thanks everyone, for the replies.  I look forward to reading more about the recent rhizotomy experiences.  Mine was scheduled for Wednesday (a couple of days ago).  I had scheduled it, because the November injection was so positive but I was still so bad.  I wanted to jump straight to the rhizotomy.  Over these last couple of weeks I continued to improve.  I sent my Dr. a fax.  I was equivocating on more injections vs.  the rhizotomy.  The phone call from him was quite funny.  I was trying to get him to tell me what I should do.  He kept on saying that he would do whatever I wanted.
I decided that we can always a plate tissue later.  We can't go in the other direction.  I canceled the rhizotomy and had another round of facet injections on Monday (four days ago).  While I'm still not great, I am improving.  My level of functionality is also improving.  I still experience substantial pain, but that is because I'm doing so much more.  I'm still taking 60 mg a day of oxy.  I'm very tempted to start cutting back and actually have been a little bit, but I think I should enjoy the success and let things settle down before I do any serious reduction in my meds.
I'll update 
my T-spine thread separately.  I think it all still get to the rhizotomy but at least I'll be sure when I do.  I hate to drag this out, but we can always ablate tissue later.
All the best, 
Mark