There are so many Scientologists in Hollywood, that it sometimes feels like the religion started by L. Ron Hubbard is the official church of the stars. Not only is it home to some of the top TV and movie stars, like Tom Cruise, Elisabeth Moss, and Laura Prepon, it also includes plenty of smaller name celebs like Jenna Elfman and Danny Masterson. But with such a big congregation, there’s bound to be the occasional bout of trouble.

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And when Leah Remini left the church, she caused just that — so much so that she even decided to write a book about her experiences, and named it Troublemaker. As predicted, her former friends weren’t happy with the move, and more than one feud was spurred. Watch the video below to learn more about some of the biggest feuds among celebrity Scientologists.

But Kirstie Alley wasn’t the only one to lose her temper with Leah. Jenna Elfman also went off on Twitter. “What is important to me? I give a damn about making the world a better place,” she wrote in a post shared to the social media platform. “I care about seeing others smile with genuine happiness. I think the world needs more of that. I’m not interested in sensationalism. I’m interested in seeing other people do well. And spreading kindness, warmth and sincerity. I never forget to appreciate the absurd. And I find it uplifting to admire what’s right in others. I also find it pleasurable to be totally ridiculous. xo Jenna.”

While she didn’t mention Leah by name, it was pretty clear that by positioning herself as bigger than sensationalism, she was accusing Leah of it. And Kirstie Alley seemed to agree, retweeting the post to her own followers.

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But when it comes to losing friends after leaving the church, Leah seems pretty unbothered — probably because she gets it. “They are not allowed to reach out to me,” she explained to E! News. “They wouldn’t want to reach out to me because what they’ve been taught is that I mean them harm, that I am an anti-social personality that means them harm, that I literally wake up in the morning and want them to fail in life. That is the mentality.”