I am going to officially declare my back ache over. And I have no idea what made it better. It might be the medicine, but if so, it is completely unexpected. During the 7 days or so that I took the pills, I felt absolutely no relief from the back pain. I can't say it was the physical therapy, since I only went that first day. I won't say I am 100% better, but then again I've probably not had a 100% pain-free back since I was in my 20's. Anyway, I don't miss the muscle spasms.
If flying in the narrow economy class seat with no knee room happens to have caused my back pain in the first place, then I'm due for more trouble when I return soon to the USA for Young Stumblers #1 and #2 graduations.