From the NBA:

F*cking beautiful.

According to a cursory review of the CBA, this would indicate a third weed offense.

UPDATE: The Bee has Miller's statement.

Chin up, homey. Life's grand. Just stop smoking, or at least ask Josh Howard for advice on beating the tests.

(By the by, Grant Napear ripped Howard to high hell when all that noise went down. I imagine he'll have a softer tone with respects to his buddy Brad.)