The defamation of Andrew Rodwell - Does the character fit the crimes?

Absolutely electric stuff this week with the affair being revealed and the rodwells imploding, I loved it, the whole reveal was executed to perfection. But...

The issue that still seems to occur to me is how does a man like Andrew Rodwell go from being one of neighbours most consistent family men to being one of it's most brutal love rats in history in the space of a few weeks?

If you think about it compared to legendary philanders or villains like karl, like Paul etc etc Andrew just never had the credentials. 20+ years married to the same woman, pillar of the community, law abiding, local hero police officer dedicated to his job and seeking justice etc. Until a few weeks ago he may have had the highest level of integrity of any character on the entire street.

So I am just not entirely convinced that a man like that will suddenly choose to eviscerate his entire family, send his job up in smoke and go against basically everything he ever stood for for decades to persue an affair with his daughters best friend and then get her up the duff. I mean even as mentioned in the show carl and izzys poregnancy was after carl and susan were split up.

So do you think Andrews trajectory to king kong love rat / monster is credible for the character?