Leadership Cult?

My friends spouse just attended a leadership training within the house on area. It’s called Discover leadership Training and everything my friend has said they are doing sounds questionable. They take phones away for four days, are in the middle of nowhere about 30 min outside Houston, made the attendees sign NDAs, and her spouse keeps saying how much better he will be for her (he has always been a fantastic and supportive spouse) and goes in and on about he has changed. All communication from the training to families are ground photos and communication includes so many buzz worlds it sounds like chat GPT wrote it. Has anyone attended or known people who attended this and give insight? We are legitimately concerned this man was brainwashed by a cult.