@Mythbuster it depends. First, he could say the son, 'who is basically disassociated' has not actually been officially announced as disassociated, if that was the case. That is a convenient technicality even if it still goes against the principle of it all.
Personally I think shunning is evil, and if someone goes against it, good for them, though I can see the injustice if one can do it and 'get away wth it' and not another.