Someone messed with it and put it back in "closed" position so you wouldn't notice. Pretty rare that a wheel falls out of a dropout though.
Yeah, that seems to me a likely explanation.
It's been weeks now and there's been no reoccurrence, so there's nothing wrong with the skewer. I understand the theory of misaligned washer and cam and believe it to be a plausible explanation, but this seems less likely than someone messing with my bike.
I suppose I'll never know for sure what happened, but I've learned a thing or two from this. I'm grateful for that.
Last edited: