Fightful Select is reporting that Rose was released due to WWE officials feeling like they were put in a tough position due to content that Rose was posting on her FanTime account. The report indicates that WWE officials felt that the content was outside the parameters of her WWE contract.
The thing about this one is, it feels really unfair to Rose, but clearly they liked her. She'd been champ for over a year, had Toxic Attraction built around her, and was the centerpiece of the NXT women's division. She wasn't some nobody, or even somebody in the middle of the card. They had plans for her. If she got fired over this, she must have been in breach of contract. I can't see them cutting her under any other circumstances.