Until it gets ugly, he's going to continue to take the high road. He can't ignore Lynn Swann, nor is he going to. But for a little while they're going to let Swann talk and see if he makes a misstep. If your opponent is going to make an unforced error, let him do it.
It'll solidify him in western Pennsylvania. He gets to capitalize on the nostalgia for Pittsburgh and the Steelers. Anyone who's ever waved a Terrible Towel is a Lynn Swann voter.