it happened. He is a close family friend of Kyle's. He said that immediately after the game, the BYU fan was snapping pictures in the face of Kyle's wife and daughter in an obnoxious (but not physically aggressive) way. Kyle's son knocked the kids phone(camera) out of his hand and onto the field. Then the BYU fan really went off with the potty mouth and threatened to sue. This person I know helped the BYU fan find his phone. After listening to the BYU fan cuss and cuss as they were looking, this ALUF finally said, "Are you going to bless the sacrament tomorrow with that mouth?" The kid found his phone and stormed off.
Summary: BYU fan was obnoxious. Kyle's son lost his cool. Emotions were high. No one got hurt. Kyle's wife was very upset. Kyle now hates the personal nature of the rivalry.