It has happened to me before, and I did the same. I actually said a little more than that, because the man tried to tell me it was perfectly fine that he cut ahead of us because he was better. I laughed in his face because we watched him lose two tee balls OB, and me and my buddy were both shooting +2 going into the last hole. Believe me, I let the man hear it. I do not care if it is a pro or not, that just shows horrible golf etiquette. So I think what you did was perfectly fine.