Newton's lawyer Chris Murphy told a court in Australia on Monday (06Aug12) that his client is now "totally free of all drugs" after checking into a mental health centre on 3 May (12).
Murphy added, "People who've seen him can't recognise him."
The Underbelly: A Tale of Two Cities star, who reportedly suffers from bipolar and obsessive compulsive disorders, is accused of punching a cab driver during a ride through Sydney in December (11).
During a hearing at the city's Downing Centre Local Court, Deputy Chief Magistrate Jane Mottley agreed to adjourn the case until 18 September (12).
Newton did not attend the hearing, as he remains in the U.S., but his lawyer asked for permission for the star to appear by video link for his next court date.
The 35 year old is also facing legal troubles in the U.S. after he was charged with resisting a police officer and trespassing at a bar in Miami, Florida on 6 April (12). Two weeks later, he was slapped with charges of battery and resisting arrest without violence following an alleged confrontation with a hotel clerk in a separate incident. He has pleaded not guilty to all charges.