For the vast majority of the Pittsburgh Steelers’ training camp experience in 2015, the offensive line groups have remained fairly static, barring injuries. Some players seemed to be settling into their roles, which was probably especially true for the offensive tackles, who had the luxury of staying on one side.
Mike Tomlin and the coaching staff decided to throw a wrench into their progress in a move that he might describe by saying that he is not seeking comfort. In other words, he flipped the linemen around—behind the starters, anyway—to see how they handle the adversity of playing in a new position.