I went to yoga tonight, figuring it would either make my back much better or much worse. As luck would have it, yoga relieved all but the faintest hint of the cramping. Maybe I should have gone on Sunday morning after all.
We had a sub teacher, and I found myself sweating a little less. That contributed to me getting a partial wheel at the end of the class. My hands and feet were the only things touching the mat, but my arms were not locked out, and I had to balance on my head at first to get into position.
I cannot go to yoga until Friday at the earliest, so I am going to try yoga on my own tomorrow or Wednesday. Heck, maybe I'll do it both days.