Tolkien the Pelagian?

Reading The World of the Rings by Jared Lobdell today and I came across a very interesting thesis point tied into the idea that Tolkien's Middle-Earth is not only pre-Christian, but a pre-lapsarian state where the fate of the Children-of-God (Iluvatar) has yet to be determined. Yes, there is evil in the world, most clearly embodied in Sauron the chief lieutenant of Melkor, but there is no "fall" story for the establishment of the Christian concept of Original Sin (please note the Jewish people have never seen Genesis as a "fall" story and have no concept of "Original Sin." This is strictly a Christian construct). It would be possible to raise many arguments with substantial support on both sides of this issue.
However, consider that the author's point may be in line with Augustine's statement that before the fall that humanity was in a state of posse non peccare. In other words, it is possible to NOT sin--tempation is not sin, it was present even in the garden of eden. Augustine goes on to say that after the fall, humanity's state is non posse non peccare (not possible to not sin), this is where we are living now and is part of Augustine's defense for our dependence on the grace of God over/against the Pelagian view that Adam's sin affected Adam alone and that infants at birth are in the same state as Adam was before the Fall. Pelagius also argued that though grace may facilitate the achieving of righteousness, it is not necessary to that end. Also, he insisted that the constituent nature of humanity is not convertible; it is indestructively good. Is Tolkien's world the perfect example of the Pelagian defense of absolute free-will? Lobdell goes on to describe the experiences and the journey of the four Hobbits of the fellowship as "progress[ing] toward spiritual awareness, toward the gift of knowledge if you will, indeed toward the gifts of the Holy Spirit generally." (p.56)
Did Tolkien accidentally create the perfect Pelagian world? If so where does a Savior/Redeemer come into play? Will some desendent of Aragorn become an Abram figure or do we really need to try and push the idea that Tolkien presents for us a pre-history of our own world to the point where the two meet? Tolkien presents a unique creation mythology and it therefore follows that the creatures of that creation would follow a different path to ultimate union with God (Iluvatar).
At another time I will try to tie this in with Athrabeth Finrod ah Andreth from Morgoth's Ring: The History of Middle Earth, Volume X, in which some have seen a prediction of a Christ like figure presaged to come to Middle- Earth, when "the One himself will enter Arda."