Friday on my way home a car pulled out in front of me from a street to my right. Didn't even see me...hell don't even think he looked. Any way, I had to jump on the binders rather hard and my rear wheel locked up and the rear end started coming around. I released and reapplied to stop the skid but my question is what made the rear end start coming around? If I hadn't had time to release and reapply I might have laid her down. What did I do wrong?