Down but not Out

I fell down while bike commuting home about a week ago. I'm sure many of the skeptics at work and elsewhere had a moment of satisfaction-"You do something crazy (by local standards) and that's what you get". Here's how it happened:
I'm heading north on Campbell Road, it's dark, and I'm beyond the streetlights of Valparaiso. I always breathe a sigh of relief when I get to this point in the ride. I've got one more tricky section-a left turn from Campbell Road on to 550 North. I say tricky because I pull off to the right and slow down to check behind me rather than get out into the northbound traffic. I'm not too confident that oncoming cars will stop for me if I'm out in the northbound lane. There's lots of traffic in both directions this night. When I look at the oncoming car it takes a moment to refocus on the dark pavement below me when I look down to see where I am. My headlight is pretty useless in these conditions-it's meant to illuminate the road in front of me not below me. Well as I'm easing to the right I guess I eased a little too far and went completely off the road. In some spots this would not be too big a deal but there's maybe a 4-6 inch drop where I am. Oh, and when I feel myself going off the road, I jam on the front brakes! You guessed it, over the handlebars I go. I wind up mostly off the road, twisted around and my feet still in my toeclips! I get up quickly and move completely off the road. My left calf muscle has knotted up and is now a throbbing ball about four inches below my knee. Apparently the fall has aggravated an Achilles injury I have been struggling with for a couple of months. At the moment I only want to remount my bike and get across the road to the county road on the other side. I can't swing my leg over the bike (I'm a left footed swinger) so I'm compelled to lay the bike almost sideways to get my foot over the bar. Once I do this I am still obliged to wait for traffic to clear. It seems like I've never seen this much traffic at this location. I eventually make it across the road. The first pedal strokes do nothing but confirm that I've done some damage to myself, but the bike seems okay. A week later, I can cycle comfortably but my running is still a problem. I'm working on another route home so I can cut out this turn (I'll go west at the light a mile south of this turn) and I've been looking at new lighting.