Because he had the final say?
If I tell my boss that idea 'X' is a bad idea 5 times and they overrule me anyway and it blows up?
Then there isn't a lot more that I can do.
This is a bad analogy. You have to remember that this is an issue that was going to be played out in the public arena. If Bomber had spoken out in a tone that placed the Essendon people under the threat of exposure then he could have stopped it. You on the other hand at your work...well quite frankly who really cares and I say that without trying to be offensive.