I would never dream....
If it is the will of the committee to overturn the decision of the chair, would that not be the will of the committee? It seems like that's contradictory. On the one hand, you can't change things that have happened in committee because the committee must do what can be done at committee, yet overturning the decision of committee doesn't allow committee to do what can be done in committee.
That's just the way it is.