You are right the FLDS are an abomonation.
So is the 'mainstream" Mormon cult that spawned them.
You decry polygamy (I think that's what you were trying to do--it was a little hard to wade through the thick cult rhetoric...) , yet belong to the Church that is responsible for creating it.
The Doctrine and Covenants, Section 132 STILL lists polygamy as a requirement for exaltation and "Godhood". It is STILL a commandment, according to "mainstream" Mormon scripture. "Mainstream" Mormon men STILL practice polygamy by being sealed to more than one woman at a time (and Mormon women are NEVER selaed to more than one man at a time).
"Mainstream" Mormons are STILL required to live polygamy--if not in the next life, in their Earthly lives, whenever the "bad" government decides to make it legal, and/or when "Christ comes again, administers the governement of the world through the Mormon Church, and re-instates the "new and EVERLASTING covenant" of "Celestial Marriage".
"Mainstream" Mormon "prophets" and leaders CONTINUED to live polygamy AFTER signing the (legal treaty) "Manifesto" in which they declared that they would end the practice in exchange for admittance to the Union. They just lied about it--the "men of God" that they were.
This is all fact. Recorded. Real.
The "mainstream" Mormon "Church" left the polygamists--the polygamists are the REAL Mormons who did not compromise what they recognized to be the "new and EVERLASTING" covenant ( as per Joseph Smith, please note that EVERLASTING means NEVER GOING AWAY) as "commanded" by God. They were the ones who refused to compromise for political reasons, and to avoid persecution (and the US Army). They (as much as I find them repugnent) were the only ones with huevos who really walked their talk (and I give them some measure of respect for that).
Utah has been turning a blind eye to polygamy for about a hundred years. Do not be fooled by their claims that they "have nothing to do with it". Methinks the lady doth protest too much....