I rode the wrong way this morning, purposefully.
I noticed about 3 miles into my commute that cars were honking like hell at me. At this time I was riding on the correct side of the road. It was dark and I was about 2 feet left of the fog line. I began to wonder why people were honking and took a look back and noticed my rear light was off, then upon further looking I noticed it was gone!
On that side of the road there was no shoulder to rid on, but on the other side of the road I had about 2 feet of paved road outside of the fog line. I still had my front lights though and tried rigging one of them up in the back. After that failed I jetted across the road and did the last 7 miles or so against traffic. It was my only truely safe option on a dark rural road at 4:30 in the morning.