Josh Howard hasn't jeopardized his NBA career with one bad playoff series. But considering his questionable behavior, Mavericks officials might be wondering whether Howard is someone they want representing their franchise.

When asked Wednesday if there was anything he'd like to do over again, Howard said, "Hmmm, some things. But overall, you only live once. You've got to keep your head up and stay positive."

Howard practically disappeared during the New Orleans series. The 6-5 forward, who averaged 20 points during the regular season, managed just 12.6 against the Hornets and shot a dismal 29.2 percent from the floor.

After a loss in Game 4 on Sunday, Howard passed out fliers in the locker room inviting teammates to celebrate his 28th birthday at a Dallas nightclub, a source said. The Mavs were down, 3-1, in the best-of-7 series.

Only a few players attended, the source said. But Avery Johnson confronted the players about the party the next day and canceled practice. The players decided to practice without the coaching staff.

The birthday party situation came two days after Howard went on a local radio show and discussed his off-season marijuana use. It was the third time in the last year he has talked publicly about using the illegal substance.

Howard did not address the birthday party with reporters Wednesday. As for the marijuana comments, Howard said, "That's already been put in the past.

"All I can do is go forward. I'm not a bad person. I admit, I've made a mistake, and I've already apologized about that. That's that."

Johnson said Howard was "awfully good to me" during his time with the Mavs. But Johnson indicated that he was miffed with Howard's antics.

"We had some unfortunate situations that happened there at the latter part of the season that I thought was just poor judgment and poor timing and something that I was just totally against," Johnson said Wednesday during an interview with ESPN-FM 103.3.

Staff writer David Moore contributed to this report.