Well, I finally gave my leg the full test.
And, touch wood, it held up wonderfully.
Don't get me wrong, I still fear a recurrence of the muscle pull (tear?), but I did some light sparring exercises for the first time since the injury occurred and walked away intact. For those who recall, it was such exercises that were involved in the initial injury. I also used my full weight for other techniques and even kicked the heavy bag full tilt again (this felt good--a lot of pent up tension).
But here's the catch. I took my four-year-old ice skating and felt a twinge by merely doing slow laps of the rink with him. This reinforces caution, of course, but hey, at least the dojo time went well.
So hopefully the injury reports are finished for now and some serious (and not so serious) training can get back under way.