Cuban is an ass, but sometimes he's right. Frankly, I think the officials have not kept up with the game. The players have gotten better and better, the rules tighter and tighter, the game faster and faster, and the officials have stayed in the same spot. The NBA really needs to address this because it's only going to get worse.
At the very least, I think they should allow coaches to challenge calls in a game after the clock ticks past 2:00 in the fourth (and like in football, if the call is upheld, the team that challenged it loses a time-out). This would alleviate many grievances about refs blowing close games.