There are a lot of bolts on my bike and they're always yearning to be free.
Last week it was a brake lever than went from a bit wiggly to all off in two rides. Tonight, during my the last scheduled commute for 2013 , my left shoe got locked into the pedal. Bit of a nuisance as I was trying to put that foot down; happily I could glide far enough to put the right shoe down. When I got home I undid the shoe, then took bike and shoe down for surgery.
Turns out a bolt had fallen out, so the shoe couldn't torque the cleat. I'm not quite sure how I wiggled the shoe off the remaining bolt, but the secret to removing a shoe-less cleat is to drop the pedal spring tension. It comes out easily by pliers.
Ok universe, I get it. I need to do something different. I've created a task for April 2014 to tighten bike AND shoe bolts, I'll do that every 8 weeks or so.
You should too.
 In December I go to CrossFit 3/x week because non-slip roads are unpredictable through March. I used to commute year round, but that was pre-kids.