The fact that these people aren't currently willing to "rewind the clock" about a week shows the dangers of human ego. Nothing permanent has been done that can't be undone fairly simply, if all parties agree to undo it. What we're watching now is the effect of ego momentum on decision making.
Try it. It's not a crazy idea. Put everything back the way it was a week ago and then agree to move forward. It will be like having knowledge of the future, with only a small amount of residual consequences. But if they can do it, it will show a huge evolutionary leap forward in ability of organizations to self-correct.