That is nose wheel steering disconnect. They still had diff braking to steer. I would bet they landed with the yaw damper on. The angle of the plane was pretty straight and they appeared to be short of A1. Who knows, but its fun to speculate. I am happy nobody got hurt. It does suck to explain to all your friends and family that it wasn't really an American Eagle airplane as most of the traveling public is unaware that Eagle too is farming out there own flying.