Touchdown Celebration

I recently read an article about a high school team in Pennsylvania who lost the state championship because a "questionable call by a referee. What happened was on the last play of the game the this team scored a touchdown to, at first, win the game, but as he was running the player raised his hand up for a brief moment to celebrate and put it down. The referee threw a flag on the player for taunting which wiped away the touchdown and cost the team the state championship. Many people think that the referee should not have thrown the flag and let the touchdown stand. I am split on my opinion here. As a player I would be upset because what he did did not affect the run or the play and the flag shouldn't have brought back the touchdown. But the rule in high school says no taunting and if the referee thought he was taunting then he had every right to throw the flag.