Oakleaf, you sound like you are feeling the way I do from my little bike crash Saturday. I know what you mean about that feeling of sliding down the shoulder of a road. Thankfully, once I get out of my neighborhood, there are sidewalks a lot of the places I run.
I fell flat on my face trail running a few weeks ago; although I had no injuries at all, it shook me up. And I immediately looked to see if anyone was around to see the ugly sight of me splayed out on the trail!
I'm a little concerned about running tomorrow with my stiff knee from the crash. The road rash is healing nicely and the stiffness is just bruising. Been using Arnica like crazy. Today, I am going on a slow ride on my Jamis with my friend who is a beginning rider. I guess I'll see how I feel after that.