according to the rules at that time the pats won the game, brady didnt fumble it according to the rules, they made the correct call
now the rules have changed because of that call
its not the first time rules have been changed because of a playoff call
same thing happened in the bucs/rams nfc championship game when the refs waved off a buc reception at the end of the game
the next year they changed the rules on what a catch is
i also wouldnt doubt they change the rules on what a td catch is now because of the call at the end of the bucs/skins game