We don't teach that the Father is the same person as the Son.. The person of the Son was crucified.. Was he alone in His divinity as the spikes were driven through His flesh.. No, the Father and the Holy Spirit were there experiencing every second of His atonement through the shedding of His blood and sacrificial death. Still it was the Person of the Son that made the sacrifice.. Are you gone so far that your spirit can't understand these things?
BTW mormon polytheism is the only sin that is so terrible that is so terrible as to guide every soul they cause to believe in Smith to hell.. That is the most major sin of mormonism.. IHS jim