Referees pick up late pass interference flag without explanation in Detroit Lions-Dallas Cowboys gameLate in the Lions-Cowboys playoff game, referees controversially picked up a pass interference flag without explanation.SI Staff|Share on FacebookShare on XAdd us on Late in the Lions-Cowboys playoff game, referees controversially picked up a pass interference flag without explanation. Published Jan 5, 2015 | Modified Jan 5, 2015SI STAFFShare on FacebookShare on XHome/NFL