It seems to me like he shouldn't push you out of your own family. Just go and keep your distance from him. Your mother will eventually have to be the one who makes the final call on the guy, and you can't control that.
In the final seven games of the 2013 season, the Chiefs averaged 34.6 points per game, scored 38 points or more 4 times, and went 2-5. The NFL has ruined the sport.