Brooke Mueller's rep is squashing reports she is headed back to rehab -- and Charlie Sheen's rep is denying they've filed for divorce.

On Tuesday, it was reported that Mueller -- who entered rehab this past February for an addiction to crack -- is seeking more treatment. But her rep, Elliot Mintz says: "What we are really talking about is not rehab ... Brooke is receiving professional help in the area of stress management."

The news broke the same day that her estranged husband's car was stolen from his home in a gated Los Angeles community and driven off a cliff. Oddly, the same thing happened four months ago.

Meanwhile, Sheen's rep is denying reports that they're splitting for good.

Though they have been living apart since Sheen was arrested on domestic violence charges on Christmas Day, "They did not sign divorce papers," his rep tells "The only thing they signed was an agreement regarding terms if they ever decide to divorce. No more; no less." See the top 10 volcanic relationships.

The two have 13 month-old twin sons Bob and Max.