This right here. He's used to dealing with a rabid fanbase, an administration/boosters that have high expectations(higher than ours) competing in the toughest division in college football with a juggernaut of a rival just a short drive away. All while never missing a bowl and winning that toughest division twice. By nature Nebraska will generally out recruit its west counterparts, so the biggest items will be getting the team to not beat itself and playing sound football. Gus, or anyone for that matter, comes it and wins a division, they will have built up so much goodwill that give them quite a bit of job security; In Gus' case he couldn't get even after what he did on the plains in Auburn.
That said, there still a full season to play out so everything will be what it will be. It's just that today was very inexcusable and completely preventable.