Well whether he was the rescuer or not, it shows that after a terrible ordeal, the dobie had kisses for the people involved instead of being afraid of them.
A dog with good temperment either by how it was raised or born with it, can over come anything. Some times we dismiss the abused ones as not being able to come around and be wonderful pets ( none of us of course). However we all know they can come from a life changing event and with time, be just fine..