For those interested, the LDS Church has been very open/candid about the belief that Jesus and Lucifer are brothers.
“On first hearing, the doctrine that Lucifer and our Lord, Jesus Christ, are brothers may seem surprising to some—especially to those unacquainted with latter-day revelations. But both the scriptures and the prophets affirm that Jesus Christ and Lucifer are indeed offspring of our Heavenly Father and, therefore, spirit brothers. Jesus Christ was with the Father from the beginning. Lucifer, too, was an angel “who was in authority in the presence of God,” a “son of the morning.” (See Isa. 14:12; D&C 76:25–27.) Both Jesus and Lucifer were strong leaders with great knowledge and influence. But as the Firstborn of the Father, Jesus was Lucifer’s older brother. (See Col. 1:15; D&C 93:21.)”
FAIR also addresses the teaching of Jesus and Lucifer being brothers.
“In summary, the concept that Jesus and Lucifer were spirit brothers and children of the same Father is not nearly as shocking as it may at first seem when wielded by anti-Mormons as a club against the Church. In addition, such a belief certainly finds support biblically and historically.”
Kudos to both the church and FAIR for their candor. I also must go on the record to say that the attempt to use this doctrine as a scare tactic, to me, is quite lame.