I suppose it's theoretically possible that BYU wins this year, but it's going to be really tough, and nobody in their right mind (including Kalani) is going into this game actually expecting BYU to win. New QB, New WRs, New OC, new OL coach, tons of new starters on defense.
Not having the spring game won't make a lick of a difference, but will almost certainly not win against Utah this year.