This is a very big deal. Many people already think that the NBA fixes games through the refs. Now the mob is? Now everytime we see a questionible call we are going to wonder if the game is fixed.
I'd say this is bigger than all the other problems going on in sports. When it comes to the sport, fixing games is worse then all these off the field or court problems.
I was talking to a guy a few years back, and he told me that he had a friend who was a ref. Now, this is second hand information, so this guy could have been lying, or the guy who told him could have been lying. He said that his friend told him that a league official would walk into the refs dressing room and say "the Kings are looking good tonight". Which was code to give the Kings the calls. He said that they did this mostly with home teams. They wanted to give the fans their moneys worth. You can't have the home team getting blown out all the time. Fans will stop showing up.
Like I said, the guy, or his friend, could have been making it up. But it does make sense. And I don't see why the guy would just make the story up.