Well it wraps into your chain, gets sucked into the cassette and then causes a kink in the chain line as well as twisting the aforementioned spoke.
I was on my way home and I made my right hand turn onto the MUP. A turn that I had made a hundred times before. I heard what sounded like a twig getting spit out of my rear wheel. I continued down the MUP and listened and listened. Nothing not even a rattle. I figured it was a twig cause it is fairly wooded where I am. I stopped at a stop sign and another and another. No sounds. Made my last left hand turn for the home stretch and while I was bombing down the last hill at 30 mph I heard another "twing" and then by bike stopped.
Here I am tires are burning, bike is twitching left and right, cars are going past me like I am standing still, feet are still clipped in. My brain is fighting with my body telling me that this is all a bad dream and to stay clipped in. My body won out and I got out of the clips before I fell.
I pulled my bike off to the curb and looked at the carnage. Two spokes broken. One was cleanly sheared about .5 inches from the hub flange and the other snapped at the nipple. the one that snapped at the nipple got caught in the chain and was sucked into the cassette and wrapped it self around the cassette and chain hyperextending the rear d. The rear d at this point is horizontal, literally. I took off the rear d and managed to work the spoke out.
The spokes have 3000 miles on them all commuting miles. So I am a little disappointed in Pilar bladed spokes.
I had three cyclists ask me if I needed tools I asked if they had a cassette tool and a truing stand. They smiled and rode on. I had two people ask me if I needed a ride. One of them was a mother with a newborn.
After calling the wife to get me and assessing the damage at the house I noticed the rear hub may be shot as the spoke that got mangled pulled on the AL flange and elongated it. Just a little, but enough that I may worry about it.
Anyway much fun was had and another lesson learned. I call my bike heartbreaker for a reason.