Katie Holmes 'Humiliating' Tom Cruise

Katie Holmes recently apologized to Leah Remini for how she treated her in the past, but the actress may soon have to grovel to Tom Cruise, too!

As RadarOnline.com reported, Holmes recently reached out to her fellow former Scientologist to ask for her forgiveness.

"I regret having upset Leah in the past and wish her only the best in the future," she said in a statement.

Now, Holmes ex-husband is furious over the public apology, reports In Touch. "It speaks volumes," a source tells the magazine. "That one sentence makes it clear how regretful and remorseful Katie feels about her time with Tom and Scientology."

"Katie is clearly getting back at Tom," the Scientology insider said. "This is the most aggressive she's been since she blindsided him with divorce papers three years ago. She's humiliating Tom again."

"Tom is furious with Katie because he knows, and the church knows, that she has a nondisclosure agreement," continued the Scientology insider. "Katie agreed not to spill any secrets."

The apology comes on the heels of the revelation in Remini's new book Troublemaker: Surviving Hollywood and Scientology that Holmes had written a damaging "Knowledge Report" tattling to Scientologists about Remini and her supposed actions after her 2006 wedding to Cruise in Rome.

"I was dismayed at the behavior of Leah Remini during the events leading up to our wedding and our wedding," wrote Katie. "The behavior as a guest, a friend, was very upsetting."

Scientologists dismissed Remini's claims as untrue, accusing her of "pathetically exploiting her former religion" and the church insisted they expelled her first.