The Laguna Beach regular had been due to start a 60-day jail sentence for a September 2006 assault case last week, but a Los Angeles judge has delayed that to allow Wahler to go to rehab.
An unnamed relative tells People.com, "Jason's in rehab, and he's getting help. He's doing well, and he's going to be a new man.
"There was a deal made (with prosecutors)."
Wahler is in more trouble after reportedly hurling racial and homophobic abuse at police when he was arrested for punching a hotel security guard in Seattle last month.
Los Angeles City Attorney spokesman Frank Mateljan says, "His jail sentence has been suspended for now. But we'll be informing the court of Wahler's latest arrest in Seattle at his next progress report hearing on June 8."
The Seattle arrest was Wahler's fourth run-in with the law in nine months, after being accused of beating up a truck driver in Los Angeles in March.
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