The wording seems like they found out she was doing a big no no in her contract and she probably thought it wasn't a big deal. They had a sitdown during contract renewal season, yuri told them that part of the contract was bullshit, both parties never came to an agreement and well fishman decided to pull the plug. I know for the fans it's hard but fishman isn't running a charity here, just like yagoo, you have to put your foot down and send a message to the other talents. If the reason was bullshit you'll see other girls jumping ship in the future but if not it was something the others agreed or couldn't argue against.