Mueller was allegedly furious when she discovered the Two and a Half Men star had filed the papers on Monday (01Nov10) without consulting her, with her lawyer, Sorrell Trope, claiming, "Charlie humiliated Brooke."
The pair had reportedly agreed not to file for divorce until next year (11) as Mueller "didn't want to make trouble for Charlie" amid his ongoing personal problems. The actor recently spent time in rehab as a result of their Christmas Day (25Dec09) fight and hit headlines last month (Oct10) following a meltdown at a New York hotel.
But Sheen's manager Mark Burg is adamant the star was fully entitled to file the papers - and questions the real motives of Mueller's lawyer.
He tells TMZ.com, "Charlie tried to reach out to Brooke and left her a message before filing for divorce. It's a shame that this ambulance chaser (accident victim lawyer) is trying to drum up more business because this divorce was finalised and agreed upon six months ago."
And Burg has urged all parties involved to think about the former couple's twin sons, Bob and Max, in the ongoing divorce drama: "Shouldn't everyone involved be more concerned about the two young children?"