So, people think that a player contacted the brother of the ASU QB (who hates BYU) and decided to go through film and game planning with him. Then this DB shared that information with his brother (and the ASU staff)... and that is why ASU did so well in the first half?

I think ASU had a great RB. BYU gave them two short fields – one off an onsides kick - that was blasted near a player... and the player stepped into it.... an accident by both teams. (ASU probably was just kicking it down field and hoping that BYU didn't get a good run back on it).