My leg is about 98% fine today. I'm amazed, considering on Sunday I thought it might be a fairly severe long-term injury.
I was surprised when I walked the girls to school this morning it felt nearly normal. So later I went out for a test jog of about 1.5 miles and did a little over 2 miles of other walking, and while it wasn't perfect (it felt a little achy after a couple of miles) it wasn't too far off.
I'm very relieved! I guess it just was an unusual muscle-cramp incident after all. I think in another day or two I'll be right as rain.