Please! send me a link to that article!!! It's funny, it means to "work very hard", if done to yourself, like "he tore his own ass", but if you say the same talking about somebody else like "we tore their asses" it means you defeated them in an overwhelming way. So, if somebody breaks his own ass, he worked very hard, but if he breakes someone else's, they defeated them. Like in the hated chant "Look, Look, Look, take them a picture, they're heading back to [home place for rival team] with their asses broken"