That is a very good question, and it applies to many others. Whistle blowers tend to experience difficulties finding employment after they come clean with something because companies worry that they are trouble makers. If you bury a criminal matter, as these guys have done, then you are punished for a cover up. You cannot win. The corporation is designed in such a way as to incentivize coverups. What level of culpability should be assigned to people who did not actually DO anything wrong, but failed to report the matter? For example, should Q be forced to resign? Should Chevy? Those who made decisions in this matter such as giving dude the letter of reference and shipping the guy elsewhere should face the music. But, I am not sure exactly sure what sanction should be handed to the others. I would actually lean on the side of being lenient in order to increase the likelihood of more reporting in the future. If there was no structural penalty to these people, I suspect that they would have been more than happy to report the matter.