"Mark Cuban has a theory about Josh Howard's play this season.It doesn't have anything to do with whether Howard is starting or coming off the bench for the Dallas Mavericks.It has to do with attitude.It is the team owner's opinion that the changes Howard has gone through off the court have had an impact on his play."Josh has worked so hard to be a good teammate and fit in that it's taken a little of the edge off him," Cuban said Thursday. "We've asked him to kind of change who he is a little bit, be - for lack of a better word - invisible. People were talking about him off the court. And he's done everything perfectly. He's been the ultimate professional and that sometimes takes an edge off of what happens on the court."Howard's game has perked up the past few games and he's coming to terms with his new role as the sixth man. He was the first player off the bench Thursday and he's been more effective this season in that role.As a starter, Howard has averaged 11.1 points and shot 31 percent. Off the bench, he's averaged 12.6 points and shot 42 percent."It's a job," Howard said. "I just get in there and play as many minutes as I play. As long as I'm out here playing, I'm happy.""