A BYU fan made a banner that read "Harline is Still Open" and waited at the airport (Portland I assume) to show it to the team as they de planed.
Also, following the 2009 game the Utes played in the Poinsettia Bowl, a BYU fan paid to have a banner flown around the stadium before kickoff that read "We Won. You Lost. You Are Classless". I was at the Poinsettia Bowl and saw this myself.
Both acts were completely lame, I'd say the same if it was a Utah fan doing them.