Sharon Osbourne said she briefly left her husband, Ozzy, around the time their teenage son, Jack, entered rehab last spring.
The Osbourne matriarch said that while the family was waiting for a bed to become available for Jack at a treatment center, her rock-star husband continued abusing alcohol and prescription drugs himself.
"I just said, 'You just have to stop,' and he didn't. And I said, 'Well then, I'm going.' And I packed my bags, and I left," Sharon Osbourne told Barbara Walters in an interview for ABC's "20/20."
The separation lasted just a few days, she said.
"The minute I left, the next morning, he gave up drinking. But I needed to make sure that he was on a roll. That he really meant it," the 50-year-old Osbourne said.