It’s a rather neat set-up, don’t you think? Get the uneasy bishops to face disciplinary charges, and then soft-soap them with promises of full (well, almost) confidentiality. And then disregard the terms of the Accord entirely, thereby letting the accused bishops know that nothing, absolutely nothing, will stand in the way of intimidating them to whatever extent may be necessary to keep them silent.
In other words, despite your own contempt for the language of the Accord, continue to hold it over them, to intimidate them from attempting to commit such an outrageous act of disloyalty ever again. And if the bishops allow that continuing intimidation to affect their actions, then I pray for them, and for the future of a Church that is in such cynical and calculating hands.