I pulled up at a junction, well it was more of a crossroads to turn right, I put my left foot down, there was a car opposite, also turning to his right. I thought he was letting me go, he obviously thought the same, he started to move, I started to move, he braked, I braked, and as I was leaning to the right I only had a split second to get my foot out of the right pedal, not a chance, so I hit the deck, in the middle of a main road, with a car inches from my head, as per original poster.
I stopped wearing the stupid things since that day, as I can't see how it can possibly be safe to be physically attached to a bike in such circumstances...but each to their own, I'm not knocking what others choose to do.