I think maybe this whole thing might come back on YOU and your family...JWs or not...for not checking on the old guy yourselves. You can try to explain that he was a JW and wouldnt talk to you but I think that would fall on deaf ears if they asked you why YOU couldnt talk to HIM. Yknow? The place was designed for independent living within a community, and my guess is they dont check on everybody everyday. Yes...you have a right to be angry. But who knows how long the old guy would have laid there if he had to wait for his own family to find him you know?
Id drop it.