I highly, highly doubt between the moment it left the Ghanaian players foot and he moment handballed, anyone on the ground knew for certain it was going in. They knew for certain he had handballed, but without stopping the game to review via slow mo replay is there any way to feel really comfortable with a referee who's possibly 10-15 yards out deciding on the spot it was going in based on the quarter of a second of action he saw?
I wouldn't be comfortable with that, nor with stoppage of game. Red card + pen is justice done for me.