So you were wondering why Donnie left LA?

Well it turns out he and his wife Kim are separating.

From John Heyman:

Our best to Don Mattingly, who left Joe Torre's staff in Los Angeles after a separation from wife, Kim, and remains one of the true gentlemen in the game. I still hope he gets a chance to manage some day and believe he'd be successful because he commands so much respect in very clubhouse he enters.

Our best to Donnie as well.

UPDATE 2/4 @ 12:45 PM - It turns out this story is worse than just a marriage ending. Donnie's wife Kim was arrested over the weekend and charged with public intoxication and disorderly conduct after she refused to leave her husband's property. Here's a more detailed description of the events:

According to a Vanderburgh County Sheriff's Department probable cause affidavit (PDF), Kim Mattingly's arrest came after Vanderburgh County sheriff's deputies were called to the Mattingly home on Darmstadt Road on Saturday for a report of a family dispute "involving a person who refused to leave."

When deputies arrived, Kim Mattingly, 45, allegedly said her husband had taken her phone and she wanted it back.

Don Mattingly told deputies he did not have the phone, so deputies informed her that he did not have the phone and that she needed to go through her lawyer for future dealings with him. She also was told to stay away from the property."

Hours later, deputies were called back to the home and found Kim Mattingly trying to leave. She was reportedly a passenger in a car. The officer said he told the driver to stop the car and ordered Kim Mattingly to get out.

She allegedly was unsteady on her feet, smelled of alcohol and "had an abusive attitude," according to Howard.