TMZ's "well-placed sources" noted that Khloe has kicked Lamar out before, but this time she's not going to fold. Lamar's August 30 arrest on suspicion of DUI was apparently the last straw, since Lamar reportedly didn't call Khloe or his lawyers after the arrest, and they only discovered what happened when TMZ posted the story.
The married couple spent time together on Saturday, but he reportedly left their home after about four hours. Since Lamar does not seem to want to go to rehab, he and Khloe are said to be at an impasse, with prospects of saving their marriage looking "grim."
This sounds a little bit like Sharon and Ozzy Osbourne's temporary split, with Sharon saying she wouldn't take Ozzy back until he proved long-term sobriety. But Ozzy admitted his mistakes and worked to keep himself clean. He and Sharon ended up living together again, so it's possible if Khloe and Lamar are committed to their relationship (and health) it can work.