Thanks for the comments! Today the really owwie place is feeling a lot better, but my whole back has that "I've-been-immobile-too-long" feel to it.  Am going to try to get some walking in today.  Kinda rainy, so I might do it at the mall. I'll post back later!  1:30 update: just back from a walk to the pizza place for a grilled chicken salad (extra chicken), took the scenic route back.  Glorious weather, about 3 miles total, leg and back feeling better, still some tenderness, so no marathons yet!