It is BYU’s first season playing in a P5 conference. They don’t have the depth yet. Sitake will be given a chance to recruit and develop the team. He won’t be dismissed for a few years. As bad as they looked (and they looked very bad) they are still 5-4 and could become bowl-eligible against Iowa State.
Sitake has some business dealings on the side that are doing fairly well. He may choose on his own to hang it up because the stress just isn’t worth it. However, he may thrive on the stress.