By continuing to imply his own innocence, he's basically pleading not guilty after being caught red-handed committing a crime. He could just stay quiet, accept what comes, and mitigate the personal baggage attached for the future if he does get fired; but by continuing to go all in, all he's doing is voluntarily tarnishing his resume more and more. This in my opinion speaks more than anything to his level of personal delusion, beyond that of the machine he works for. It seems like he honestly believes he's going to skirt through this lily white if he just keeps screaming he's innocent and loves Jesus.