The bottom line is this is his grandmother to this child he is talking about,, true or not he needs to keep his mouth shut.
I think Jon should step aside and let his family continue on the road that has been choosen for them, he didn't want the family life anymore..he has no job, can he afford to support the children with no job I don't think so..let Kate alone and let her do what she feels is best for the kids..Jon gave that up when he left the family life..