I have an idea. Since you really don't want to continue driving the car while the problem exists, why not throw a jack stand under the frame and pull the wheel off.
Take some pictures from different angles while you move things around.
You may not need to pull the drums if you find the lug nuts were loose.
Regardless, lets see your brake job. It was recently done so the area will still be clean. While you're at it, let's see the other side as well. - Dave