Not necessarily talking about the moves due to injuries - they'd move guys around from play to play it seemed like, when there wasn't an injury. Just like teams do with a D-line. Within the same drive Mays would play half the plays at tackle and half the plays at guard.
I remember coming on here after the Georgia St loss and seeing fans, rightly so, rip Pruitt for rotating our O-line as though it was a scrimmage game. Basically nobody was really defending Pruitt after that game, but I do remember reading some comments to the effect of "Well, Georgia does that too and their offensive line is really good."