Dan,

My background is similar to yours - except for the handgun element Damn. Also former athlete in "perfect health" prior to being diagnosed. My RSD was triggered from surgery for cartilage damage in my ankle. Symptoms and timeframe were similar to yours at your current juncture. I am fully recovered now.

-Is the Nerve Block a good step to take right off the bat?
See Zookester's answer on this. By the time doctors were pushing me for a lumbar sympathetic nerve block, I was already making progress healing on my own through an aggressive regimen. Any further invasive trauma had additional risks I was not willing to take relative to the progress I was already making. It benefits some people and causes spread in others.
-Since this seems like it has been diagnosed early can I expect to have better results in management or remission?
YES.
-How can I prevent this from spreading anywhere else in my body?
Boost antioxidant intake. I took 600mg of NAC 3x daily for 60-90 days. http://www.rsds.org/pdfsall/treatmen...ee-radical.pdf
-What are some of the life changes I should expect?
It will greatly vary on an individual basis. Use the same systematic focus you have honed as an athlete and apply it to the healing process. You will do well.
-Since the pain in in my foot and ankle what is the best home relief remedy that has worked for you?
Mirror therapy, visualization techniques, desensitization and massage, water therapy, and DMSO. Constant gentle motion. Narcotics gave me a 4 hour window to rock out on my regimen early on so I used that window as efficiently as possible for healing. Here's a link to everything I ever did that had a positive impact on the healing process: http://neurotalk.psychcentral.com/thread205597.html Some of it gets weird and I would've discounted at least half of it right off the bat if I was in your position 2 years ago. Open mind required.

Oh yeah - especially as a former athlete - visualize the sport-related things you did as vividly as possible and experience them fully in your mind - focusing especially on your leg being fully functional and @$$-kicking. This simultaneously helps relieve the pain by putting your mental focus elsewhere. That's literally all I did during countless insomniac nights.

And NO ICE.

Go make yourself some good luck my friend.