It has been talked about at length back when this was still being updated. The Dev sort of wrote himself into a corner with John, as he's basically to powerful to fail. I'm sure John knows that the MC is actively "involved" with his wife, he basically spelled it out the last update that he knows. A guy like John isn't going to go for divorce, or accept that a "better" man won, he isn't going to let people he has blackmailed/raped run around unmonitored and leave it to chance that some pictures or mean words will keep them in line and not rat him out...and lose everything he has built at the agency (like the guy doesn't think to add spyware and listening devices around his own office, home and victims homes).
IMO, the only realistic option is to kill the guy and run off into the sunset to a non-extradition country under different names, but that doesn't seem to be this Dev's style. It'll be interesting to see how the story unfolds, but it's likely going make the players of the game to turn off their brains and not think about how illogical the MC's victory over John will be.