Nice work swwhite, I don't live far from you and had the pleasure of experiencing the same temperature for my commute yesterday. I thought about wussing out but then I was reminded that a couple guys at work had bet that I wouldn't ride on Friday as they knew how cold it was going to be. Additionally, it was about -5 on Thursday, so near -10 didn't seem too much worse.
Well it wasn't a fast commute, and it sure wasn't the most enjoyable (~15 mph headwinds both ways), but when I arrived at work I was thrilled that I got there under my own power. Anyway, as a fellow Minnesota commuter, my hat is off to you.