No. They shouldn't. The only way BYU scores 60+ is if UNLV puts up 50ish and forces BYU to keep heading for the end zone. We are not a home-run threat offense, we don't return kicks for points, and our defense is not going to let UNLV keep up (knock on FSU-wood).
Unless there is a need to get the score that high, Bronco is not going to let the offense play X-Box out there when he knows the coach on the other sideline is hanging onto his job by a thread. We get up by 3 TDs or more, it is going to be a steady diet of Unga and Tonga between the tackles.