Then.....what's this? My left foot seems to be wobbly, loose, like the clip ins are twisting with each pedal stroke... I think I can make it to the next rest stop when.........out pops my left leg, foot and shoe still clamped into the speedplay! The whole left crank is off. I did see something spinning off into the roadway, but with many, many cyclists still racing toward me I could not find a little black ring on the dark black ashphalt. So, I one footed it to the first rest stop. No spare parts to be found. I guess my day is done.