Well ladies its finally happened to me too. I fell over bike and all because I couldn't unclip fast enough. I was so happy that I had possibly escaped that part of new pedals.

I had unclipped my left foot at the base of my aunts driveway and was going to leave that foot unclipped and pedal up the hill. But my cleat had other ideas and I ended up clipping in again. When I got to the top I had to stop suddenly or run my bike into her cement pourch. So I grabed onto both brakes and stopped faster then I expected. At the same time I stopped, remembered oh no I'm still clipped in . So I right as I was trying to unclip my left foot I fell over that direction right onto her concrete pad. My hip is still sore today. Other then that the bike and I are fine.
Thank you to all the ladies who have shared their stories, somehow that makes it not quite as embarressing knowing I'm not alone.