No one was asking Pence to reverse anything. All that was being asked of Pence was to delay counting the votes due to the fact that State Legislatures from PA and AZ were asking for time to review what happened in their states, and reportedly GA and WI legislatures wanted the same. The Governors of those states were refusing to let the State Legislatures call a special session so they had to wait until regular session.
There is absolutely nothing in the Constitution saying the Electoral Votes must be counted on January 6th.
According to President Trump’s attorney John Eastman, Pence grossly exaggerated and mis-characterized what they were asking him to do.
All of this!
There is in law. That can't be overturned by fiat. It takes a change to the law or a court ruling striking the law down.