I had a mechanical on the fixed gear this morning, when my windbreaker somehow escaped from the rack and wrapped around the cog - resulting in a sudden skidding halt. The torque pulled the wheel into the right chain-stay. I teased the windbreaker out, but to make matters worse I had the wrong wrench in my bag, too small for the axle nuts. That was a disconcerting quandary - I'm not going to call home for a wrench, or drag the bike the last 2 miles with the rear wheel locked, and I wasn't wild about rolling it while holding the rear up. I wound up hammering the axle nut with my beefy mini-tool and got just enough clearance to get the tire rolling, but I was worried that too much pedaling force would torque it back, and justifiably since that's what happened when I started uphill at an intersection. So it's going to be one of those least possible effort rides on the way home, until I can properly adjust and tighten the nuts.

I'd had the windbreaker rolled up, under two bungee cords, double-checked that it was secure, yet somehow some part worked loose enough to get into the wheel and got pulled in. Lesson learned: it goes in the bag, or on the back of the rack, never on the front no matter how secure.