Colorado has to hope Iowa State loses another game or BYU loses 2. If Iowa State wins out, they would likely have the tiebreaker over Colorado by their eventual victory over Kansas State. BYU also would likely have the tiebreaker, if they lose one.
If BYU ever has to go to the fourth tiebreaker, we will lose out because most of our conference games have been against the bottom of the conference. It is for this reason that BYU cannot afford to lose 2 games. If we get caught in a large tiebreaker circus with multiple schools, we may not fair well.