The offense was pitiful. Their rookie quarterback, whom they took No. 1 overall this year, looked overmatched. And their “unpredictable” owner watched it unfold alongside a bunch of family members. So Titans head coach Brian Callahan was fired Monday , a day after an ugly 20-10 loss to the Raiders in Vegas that dropped them to 1-5 on the season, and 4-19 in his year-plus tenure in Nashville. “I think this is a lot like the Mike Vrabel situation. It’s Amy acting alone,” Sports Illustrated’s