Not worried - I still think a 12-0 regular season is possible - though even with BM, I still thought someone would give us a tough game, namely MSU. PSU, and um. Much is different now...you have the backups taking all of the snaps since spring, you have a coach who is an offensive expert with the spread, you've recruited spread quarterbacks, you have tons of playmakers and tons more speed than we have ever had, you have the best if not one of the best offensive line coaches in the country (I expect the OL to end up being one of the team strengths). If we really have an elite offensive coordinator, he will figure out a way to give JT confidence in each game, maybe throwing short passes with a high chance of completion to start each game, and vary the play calling enough to confuse the defense - like throwing short on first down.
With the athletes we have on defense, a good coach will show DRAMATIC improvement and that should give the offense a little wiggle room. I will be shocked if we are worse than 10-2, more so than if we are 12-0. With or without BM, this team has a lot of talent and this season will tell us just how good our coaches are.