Am I the only one who sees him as "mainstream for the area" before that crime? No bad blood in school, had friends, liked in the army, not asocial, a good neighbor. He lived in Utah, but in 2010, so whatever could have happened there was 15 years ago! He is likely an average voter, no more obsessed with politics than others. DUI and a burglary stand out, but it happens, and as long as there is no recidivism, people with good family support can fit back in. (We don't know the circumstances, of course). He has a sick child, this is what sets him apart, but he and wife managed. They bought a house. Nothing that we know today explains the horrible act.
What we know though is that there is a history of substance and alcohol use. Periodically reverting back to old habits is not uncommon. Could that have triggered a psychotic event?
Sanford is friendly to a total stranger who canvasses the neighborhood (so, not that paranoid or angry, it seems). In the conversation he is obsessively fixated on LDS, but not to a dangerous degree, the visitor thinks. Could taking too much of *whatever floats on the streets these days, and we don't always know what* turn some prejudice into a deadly sick obsession?
Well, your guess is as good as mine. I hope we’d be told what has caused such distorted thinking. His family is shocked, it seems.