Comedian Robin Williams has checked out of rehab and moved in with a sober friend in a bid to save his marriage to his wife MARSHA. The Oscar winner, who is battling alcoholism after more than 20 years of sobriety, checked himself in Newberg, Oregon's Hazeldon Springbrook clinic in July (06). However, Williams is determined to win back his spouse so has moved in with a non-drinking friend "to ensure he doesn't fall off the wagon", reports British newspaper The Sun.