"Saruman has poisoned the mind of the King and claimed Lordship over these lands."
That would be my guess, although I only own the extended editions, and have not seen the theatrical cut for a long time. Also I'm not sure if that particular scene is even changed in the extended edition anyway.
When watching the extra behind the scenes stuff I remember this scene, maybe this image is from one of those, but it is definately from the first meeting with Aragorn, Legolas and Gimli.
Maybe it is when he says: "Not even his own kin." just after removing his helm.