I rode from work to the train, 7 miles in 19:30. Pretty fast. If my rear wheel was in this condition at that point, I would not have ridden that fast...
One of the rear spokes has pulled through the rim.
After the ride, I took the train to SF. Certainly on the Caltrain there is some bumping, but my bike was pretty isolated on a rack with other "nice bikes". I rode
from the train station to meet my wife in Potrero Hill and didn't notice anything, nor did I notice the wheel ramming the brake while walking the bike to put it into the car. The bike was in the back of the Pilot sort of haphazardly. I just wonder, if you whack a spoke could it result in something like this? I'd be more accustomed to a spoke breaking, not pulling through the rim. Not that I haven't had a spoke pull through a rim before. Perhaps just par for the course for putting in a lot of miles at 210 lbs.
Aside from the curiousity of trying to figure out what happened, the next question is "what now?". I had this same thing happen to a machine built Mavic open pro built on an Ultegra Hub with double butted spokes. A rebuild would cost more than a new wheel (if you can buy a rim and build a wheel it's about 1/2 the cost of a wheel). But this is a $500 wheel. Where's the value? Hub? Spokes? Rim? Do I try to get this thing rebuilt? Or am I shopping for a new wheel? And if so, what wheel might avoid this issue? Don't bother saying Ksyriums - on my old Ksyriums I broke 5-6 spokes and with the last break I decided to throw in the towel. I rode to PA bikes, bought the Zipps, told the store to repair the rear Ksyrium so I could sell the wheelset to a flyweight. They called me the next day and said "The nipple has pulled through the rim..."