Arifinto's excuse was pretty much the same one that a kid gives to his parents after being caught with a porno on his screen -- he tried to open a perfectly legitimate-looking email when suddenly this porn downloaded itself and started playing on his screen (this is not a thing that actually happens). Evidently, he was so frozen in horror and disgust that he was unable to switch it off or look away, forced to sit trapped in its bonerizing glow like a deer in headlights. (Get it? Headlights, like boobs?)
Despite totally by accident watching porn in the same chamber that he was in when he made watching porn illegal years earlier, Arifinto chose to quietly resign, since doing anything else could possibly have gotten him charged with breaking his own law. He's since gone back to running his printing company, and we're sure whatever they print is absolutely mega tasteful.