Oh no, Wecc!! That really sucks! Just when you're ready to get the AD and finally get relief, your doc gets into a car accident! Man, that's seriously rotten luck!
I hope your doc is ok.
Spasms are evil! For me, there would be really bad days when I couldn't walk, sit or breath. Other days would be a bit better. But I never found any reason for the difference.
The only thing that really worked for me was extra-strength Robaxacet, sometimes with an ibuprofen too. This didn't completely eliminate the pain, but it did help take the edge off it for a while. Others here said that sitting on a heating pad helped them (it didn't really work for me, but it did seem to do the job for many other folks).
I'm so sorry you have to wait so long for your surgery. Hang in there, buddy! You will beat this demon!