Group quits the Church en masse. This article annoys me. Frankly, 150 people from 3 states is unsurprising. I'm sure there are far more than that that disagree. But this is a somewhat notable event, and so it's not surprising that it would get an article devoted to it. But this quote is a sign of ignorance.

The Utah-based Church of Jesus Christ of Latter-day Saints is known for its culture of obedience, and the mass ceremony was a seldom-seen act of collective revolt.

While obedience is always encouraged, it is never required. Any church holds expectations, and most any religious organization will encourage obedience to some set of laws or commandments. Describing it as a "culture" is likely an implication of particularly strict standards (which can be argued successfully) and punishment for getting out of line (much harder to argue). I'm sure some are ostracized, but there is certainly no official punishment for anything less than severe sexual sin, and any ostracism is strongly discouraged.