Hi SpaceMan27-
I would go back to the pain management place you went to and get another set of RFA's and nerve blocks. I had them done a few times, and they never worked for me, but a two month lack of pain from the RFA sounds like heaven to me, and for a more permanent result you may want to try having a few more treatments. You may also want to ask the pain clinic about botox injections in the back of your neck (in trigger points) in conjunction with the blocks, and find a very good massage person that will help keep your neck and traps loose after these procedures are done.
You can also try Yoga - I would suggest Iyenegar style because that is the only one that deals with healing the body, and look online for the Iyenegar Institute, call them and try to find a senior practioner in your area. A bad yoga instructor can do more damage in a few sessions than doing nothing at all, so find a good teacher, and depending on where you live this may be difficult. You will know after one session whether the person is hurting or helping.
I have been on MS Contin, percoset, oxycontin, and have found them to be poor pain controllers. I have had good luck with Toradol injections, which is an NSAID, takes about 4 hours to work and you must catch the mgraine at the beginning otherwise it will not help. I like it because it is non-narcotic, and those are really hard to get off of when they are not working.
Just stretching and keeping the muscles limber when the blocks are working may help. Good luck and keep in touch.