Like Rut said, as referees go higher and higher in their level and ability, they take additional things into consideration when calling a game.
I didn't see the game, but I do agree with that philosophy in a blow-out game near the end. White has no chance to win the game. The contact by team B might have caused White to lose the ball. A lot of the "stupid things" that happen occur when a team is getting their butt kicked and they do them out of frustration. As you witnessed, giving the ball to blue led to a possible frustration situation.
So considering everything, what could go wrong if you called the foul? What could go wrong if you don't call the foul? The game has been decided and the only way that your game could end up on a bad note is if someone on Team A loses their cool right? IMO, call the foul.
