To be honest, this isn't surprising to me. Most of the players on this team were looking for a National Championship, and nothing less. To play in anything else is a disappointment, and some of them don't know anything other than The Big One. Given the disappointment, especially the deflating nature of that one loss (which also knocked them out of the SEC championship) can't be discounted.
Also, they were knocked out of contention for the SEC championship due to that one loss, so this team hasn't actually played in awhile.
So, all of that added to a 'Bama team that has looked a bit vulnerable of late, and I can't say I'm shocked to see them down big.