That isn't how it went down. First of all, even though LDS abandoned polygamy that in no, way shape or form means that everyone said........k, that's all folks. There was a huge debate between the First Manifesto and the Second Manifesto and when the excommunications began that didn't mean that communication between the members stopped. It definitely destroyed families. It was an excruciatingly painful time period. So, they didn't steal anything and pull it out of their behinds. Some carried on in the same tradition and even maintained ties with LDS members and family. Now, of course, LDS wants to distance themselves as having this complete cut since they lost the Reynolds case.
LDS has always miraculously changed their theology when faced with legal ramifications for their former "deeply held" beliefs.
They abandonded polygamy when the U.S. Army was about to destroy them.
"Polygamy was probably a significant factor in the Utah War of 1857 and 1858, given the Republican attempts to paint Democratic President James Buchanan as weak in his opposition to both polygamy and slavery. In 1862, the United States Congress passed the Morrill Anti-Bigamy Act, which prohibited plural marriage in the territories.[3] In spite of the law, Mormons continued to practice polygamy, believing that it was protected by the First Amendment. In 1879, in Reynolds v. United States,[5] the Supreme Court of the United States upheld the Morrill Act, stating: "Laws are made for the government of actions, and while they cannot interfere with mere religious belief and opinion, they may with practices."[3]
In 1890, church president Wilford Woodruff issued a Manifesto that officially terminated the practice of polygamy.[6] Although this Manifesto did not dissolve existing plural marriages, relations with the United States markedly improved after 1890, such that Utah was admitted as a U.S. state. After the Manifesto, some Mormons continued to enter into polygamous marriages, but these eventually stopped in 1904 when church president Joseph F. Smith disavowed polygamy before Congress and issued a "Second Manifesto", calling for all plural marriages in the church to cease."
Ah, the purity of faith.