I spent most of my morning furiously redoing my rear derailer trying to get the road bike back to 'reliable' for today's surprise sunny day, but it was the front derailer that betrayed me; at some point, the bolt holding the cage together went missing and the outer arm bent out and snagged my crank arm. That was a surprise! But I could bend it back out of the way and leave the chain on the big ring.

Thinking about just removing the FD for the ride home, don't want any more surprise bends on the cage to reach out and grab anything.