Magnetized bearing?

Hey guys. Yesterday I was opening my YYJ Trigger and I spun the bearing and noticed it seemed to stop at the same spot. I spun it slowly and it reacted like an armature in a motor can. It seems like my bearing has some how been magnetized and now has a specific polarity. Its a YYJ speed bearing btw. I was wondering if anyone else has seen this happen to theirs

http://www.ehow.com/how_8118510_demagnetize-steel.html