Larrionda deals out cards as if it's nothing and rightly so, and those quick cards worked: in the end there were only three. But he misses things too. At least three bad fouls. Ronaldo wasn't angry for nothing. Larrionda didn't live up to his own standards.
There were many more fouls in the 1st half, than in the second. Larrionda had made his point, showed them who was in control and could take it easy after that. Like a schoolteacher.
Or the players were told to beware of the Larrionda.
I'd like to see this match again with a European ref, see how many yellows he would pull