I wonder if this man wasn't experiencing something similar to a mid-life crisis.
Maybe he was questioning his marriage, his ageing, his career stall, etc. But because
of his church relationship and traditional values maybe he couldn't admit to himself
or his pastor or his wife that he was very confused and wanted to make changes in his
life that would not be acceptable or understood by others. Maybe he was in conflict
and unable to sort it out. This could lead to depression and anxiety, IMO.
If you look at his FB he has NO pics of family, no mention or pics of wife, children, grandchildren. Seems he just wasn't into his family to me.
Maybe, in his mind, it was easier to take out his wife (w/ car and 'mental illness') rather
than divorce her and be shamed by family and community. Supposedly he was an
'icon' in his church according to his pastor. Just my opinion.