Expectations are a killer in sports. In this particular sport, expectations can be a coach killer. That's because coaches are viewed as less important than the players, and they're certainly paid less. When struggling to meet expectations, teams tend towards changes that are more cosmetic.
In the case of the Brooklyn Nets, it's hard to see what they thought this season would be. You don't go in with Brook Lopez as your defensive anchor and expect to compete for a championship. Given that Avery Johnson was fired at the first sign of trouble, you'd have to conclude that either: a) Team management wanted him fired for a while; or, b) Team management is wholly delusional. Hey, it can always be both options when your team is run by an occasionally interested Russian billionaire.
While we're sad to see Avery Johnson go, we're amused at how Dwight Howard has directly and indirectly led to so many firings. The Nets failed to meet expectations because they thought they were getting Dwight, thus helping to oust Johnson. The Magic wanted to keep Dwight, so they ousted Stan Van Gundy. The Lakers thought they were getting a healthy Dwight, and Mike Brown was fired when that wasn't the case.
Note to Rick Carlisle: Considering that your team was in the Dwight sweepstakes and whiffed, you could be next.