According to Wikipedia:
"Unitarians believe that mainline Christianity does not adhere to strict monotheism, but that Unitarians do by maintaining that Jesus was a great man and a prophet of God, perhaps even a supernatural being, but not God himself. They believe Jesus did not claim to be God and that his teachings did not suggest the existence of a triune God. Unitarians believe in the moral authority but not necessarily the divinity of Jesus. Their theology is thus opposed to the trinitarian theology of other Christian denominations."
Does this mean that even from our standpoint it is not idolatrous? Can one enter a Unitarian church as one can enter a mosque?