The spread option run at high speed, sometimes called the "speed option", works and the Oregon Ducks are the living proof. However even Oregon has trouble finishing games but the difference with them is that they have scored so many points that the game is out of reach. Look what happened versus ASU. Up by 39 points by early in the second quarter and then give up 21 later in the game. Sure it happens mainly in garbage time but their first string D has given up a number of scores after the offense has built a huge lead. The change of speed of the game seems to even affect their own defense and then their offense starts going 3 and out. The Ducks have the problem of not looking like they are trying to run up the score so they to slow it down somehow. They'd be happier if there was a "7 run rule" so they could call the game early.
I'm not even implying that the Griz O is anything like the Duck's O but the Griz have lost leads late in the game on multiple occasions and it is somewhat the function of the offense trying to slow it down to burn clock (and commiting a host of errors in the process). Given that the Griz don't build 40 point leads before they start to implode they certainly should not even think about slowing anything down. Keep the speed and energy level up for both the O and the D. It certainly couldn't hurt at this point. And of course find someone, anyone, who can stay anywhere near the other team's receivers. Get some PI penalties if you have to. Beats the crap out of getting toasted on long passes.