I barely averted a clipless fall on today's ride. The screws in my right cleat (Eggbeaters) had become loose, and I didn't realize it. When I went to unclip my right foot at a stop sign, I rotated my heel out and out and out until my toes were pointed RIGHT at my frame, and I still couldn't unclip. By this time I'd slowed to nearly zero mph and had gone off into the grass on the right side of the road (thank heavens there was grass as I knew I was going down very, very soon). It all happened in slow motion, and I kept thinking "Damn, I'm gonna fall, and double damn, the guy in the car coming the other way is going to see me!"
Somehow, someway, at literally the last second, I was able to send a signal from my brain to my almost completely irrelevent left foot (I NEVER unclip on the left), unclip it, and lean my bike that way. One second later, and I would have been in the grass. I still can't believe I didn't fall!
I took my foot out of my Keen sandal on the right and figured out why I couldn't unclip: one of the two screws had fallen completely out, and the other was loose, allowing the cleat to rotate 360 degrees around on the pedal but not unclip. My DH tried a couple of tools but could not get the shoe off, and I just knew I couldn't ride having to clip out on the left all day. Fortunately, I was finally able to muscle the shoe off the pedal somehow, and we ended up putting the 2nd screw from the left cleat onto the right cleat so that I could clip out without freaking out.
I rode 43 more miles with only one screw in my left cleat and nary a problem! Disaster averted....
