Easy and slow. Lots of stops to stretch and strangely, though it was sore for some time after the run, it stopped later in the evening and felt pretty much fine by the time I went to bed. I can feel the pain with a deep massage behind the ankle but I'm otherwise fairly spry. I kinda don't get it. I ran yesterday with some trepidation and a sure feeling that it was a bad idea but this happy outcome is a surprise. I am so far from understanding the mechanics of my body.
Here's the picture, by the way. That is some serious engineering: