Did it happen pretty quick Aaron? That's a good thing if it shut off really quick. I know the power shuts off to my blades really quick but I can hear them spinning for a couple of seconds before they stop at least. I always figured that if a person got leaning over on a slope and they jumped off the high side (the best thing to do if you can manage it) and the mower came back down on them that they would be hurt pretty bad by the blades because it would happen pretty fast. I understand that a blade not under power isn't likely to remove limbs but it could put a serious gash in whatever it hit.