John Hogan inquest ruling quashed - over his mental state!

So there is to be another inquest into the death of the the little boy, Liam, who was pushed off the balcony in Crete - because his father, John Hogan's mental health was not taken into consideration...
It seems that his sister asked to overturn the unlawful killing verdict on the grounds that Mr Hogan was “not in control of his actions” because of his psychotic state.
Surely, we all know that this is not normal behaviour and one would have to look at the mental state of the person who does such a thing. Stating the bleeding obvious i would say!