mgriffith033109_01_X17.jpg Melanie Griffith has checked into the Cirque Lodge in Utah, her rep has confirmed. In a statement released today, her publicist says, "She is there to reinforce her commitment to stay healthy. This is part of a routine plan that was designed between her and her doctors years ago."

However, Star mag reports that this stint in rehab is a bid to save her marriage! An insider says, "The reason Melanie checked in was her husband was demanding that she get clean and sober. He told her that if she didn't get the help she needed it would be the end of their marriage."

According to another source, "Melanie's struggling right now, but Antonio has been checking in on her as much as he is allowed, making sure she gets back on her feet. Without Antonio in her life, I honestly believe Melanie would be dead." Yikes!

Hopefully the 52-year-old actress is getting the help she needs!