someone posted about this on another forum I read. Apparently the family were relations of a friend of theirs. Apparently now they are unrecognisable as the same kids - behaviour much improved.
I found the mum's body language fascinating. At the beginning she looked totally defeated, by the end you could see her self confidence growing. Husband did seem to inadvertanly undermine her authority when he came home and started laying down the law. She shouldn't have told him what was happening during the day . She didn't look physically strong enough to make the oldest boy to do anything he didn't want to. And I admired her persistance in getting them into the naughty zone - most people would have given up !
Agree diet changes might well help improve things more, and more exercise to burn off their energy, and focus their minds.