iv just watched Gamboa - Salido and Joe Cortez takes 2 points from Gamboa for hitting Salido whilst he is down

now my two issues with this are that the crazy old fool disqualified Humberto Soto for a glancing blow after he had knocked Lorenzo down but yeah a much harder blow to the back of the head supposedly carries less of a punishment.... but also can a ref deduct 2 points for one foul like this ? seems just like a way to try and screw a fighter out of a decision