I think I might have left the disfellowshipped part out and simply asked him what the societies recomendation is on how to treat baptized family members or friends who join another religon or simply leave the Watchtower becasuse they don't believe it anymore. He might have said that you should avoid any unecessary contact with them. At that point you could direct him to the article where they said one should be free to change their religion without being punished.
Either way, you can tell this guy is just sick of once again being on the defensive over some out in left field statement made in the magizines and or has a really low opinion of anyone who is disfellowshipped. I didn't hear any compassion or concern for the "lost sheep" or the possibility of gaining a brother back. His voice and demenor really reflects the true tone of this organization as a whole.