Excellent sentence - life without parole.
As for the father, though not in anyway blaming him for what happened to him and his poor family, the BS spouted by the WTBTS has people doing the stupidest things ie approaching total strangers that normally you would avoid like the plague. Just as stupid as going to the homes of total strangers.
There have been Watchtower articles and Awake, of course, siting numerous alleged occassions where angels must have been guarding JWs. Total BS of course. And look what believing that rubbish led to.
A very sad story but something to be learned from it.