This is well madness, but this isn't mormonism this is just people using religion as a front to engage in what are morally wrong and possibly illegal activities. You'd be surprise at how many religions there are in this world, many of which are not mormon related whatsoever but where sexual abuse, physical abuse etc. are allowed. Its disgusting but its life. I realise these people were part of the mormon church, but one does not need to mormon as churches that do not fellow mormonism also engage in such activities.
What I think is a larger issue and something that may be going on in the United States etc is that here in New Zealand, religions can enjoy many tax advantages and can theoretically break laws such as everyone gets a fair shot at a job etc. This is why religion can be so wrong. Its also why I am always questioning any religion outside the main ones, because they're often cover-ups. But I don't mean to sound rude or anything, but its not like America exactly stops half of this crap.
Religion can often be abused, and while I' agnostic and was once very athiest, I have come to the conclusion that I'm ok with religion. But religion in itself can be such a dangerous tool that can abuse, abuse and abuse some more.