Hmmm...
He hits on some points I clearly understand, but he seems to suggest (or is, rather) that those who fall away, weren't Christians to being with -- a point which would make his position nearly indisputable.
That means that god predestined his followers, specifically, but that also suggests that God lied to us in regards having free-will to choose our faith. If he not only knew, but choose, Christians before they were even born, then free-will automatically goes out the window, and anyone that isn't currently a Christian is doomed by default.
What's the point of preaching, then, if God already choose us? It would have made Jesus look foolish going to people whom he knew would turn down his message (and people did) and it would also invalidate his sacrifice (for all men to be saved... after all, not all people are Christians, right??).
I hope I am not misrepresenting the article or the point, but it doesn't make much sense when I thought about the above remarks.