As the pressure is already on them to rectify the situation, there's no need to for an artificial deadline. It adds nothing, but could delay their announcement or force them to publish an incomplete response.

"and we admit that a full accounting for these actions is necessary before our ban is rescinded" is a valid (albeit even less common) form of making sure that they are held accountable. Nonetheless, it is important that the accused admits it.

The common case today is that admitting you are due to account for your actions is the same as admitting that you are at fault. I have been denied jobs because I have admitted that to being accountable for my decisions, whereas I got the distinct impression had I simply not accounted for them they wouldn't have cared.