Complex sentence: After the death of Joseph W. Musser, the community split into two groups: the Fundamentalist Church of Jesus Christ of Latter-Day Saints stayed in Short Creek, while the Apostolic United Brethren relocated to Bluffdale, Utah.
Split into simpler sentences: After the death of Joseph W. Musser, the community split into two groups. Those were the Fundamentalist Church of Jesus Christ of Latter-Day Saints, which stayed in Short Creek, and the Apostolic United Brethren which relocated to Bluffdale, Utah.