I'm not disfellowshipped at all and your grandfather wont eat with me either.
But in all serious, Welcome to the board Damien. That sucks they took your grandfather away from you. Some people say blood is thicker than water. I guess that doesnt apply to the jw's.
You start out with 4 grand parrents and 8 great grand parents. Sometimes they all dont work. When I was a young men 2 of my grand parents were alcoholics. They werent witlesses but they really werent worth talking to. They say you can choose your friends but you cant choose your realitives. It's your grand fathers loss not being able to talk to you.