I wouldn't say I'm nervous, but I certainly hope they look at this as an opportunity.
In a typical game week, there is partial attention paid to game-planning, partial to improvement. In a bye week, focus on techniques, then the next week on game-planning. I hope they shift the prep somewhat toward improvement. In a sense, I hope they kind of view this as a bye week, while still taking the actual game seriously so as not to look past S. Alabama.
By that, I mean, the OL can focus on run blocking, being more physical, keeping pad level low, getting to the 2nd level with their push; QB can focus on accuracy, timing with WR; WR can focus on routes, timing, making plays; RB's going N-S in the holes; DL getting pressure, their hand techniques/swim moves/whatever, 3 strains; LB's eye discipline, gap control, angles, tackling; DB's basically the same stuff as the LB's, as well as coverage. They're not playing a world class opponent where any minor mistake will kill them, and they need to scheme like crazy, so I hope they really focus on fixing the little things that will catapult their techniques and discipline that would pay dividends later against better competition, where in those weeks of practice, much attention will need to be paid on stuff like, how do we account for this WR, Aaron Murray, this amazing DE, etc.
In sum, focusing on the above would not be enough when you need to do significant game-planning for great competition. However, focusing on the above without overlooking S. Alabama such that they still have to goal to drub them would be decent way to view the week. In my opinion at least.