Goodell could overturn the result, giving the Saints the win, have the game ending replayed from the point of the non called penalty, or have the entire game replayed. Imagine the uproar if Goodell actually decided to implement this rule in this instance.
https://www.cbssports.com/nfl/news/...-saints-outcome-but-would-he-actually-use-it/
https://www.cbssports.com/nfl/news/...-saints-outcome-but-would-he-actually-use-it/