Cirdan, did you read that article all the way through? I read one and a half parts and then gave up. I do believe the author's reasoning is quite off...quite..
I also believe he misrepresents the Balrog's thoughts and intentions and his fear, or lack of fear, according to the author, of Gandalf.
That being said, his take on it and explanation for wings was quite interesting.
Gray, there is a rather lengthy thread going into everybody's opinion on this topic. See
here.
-- Folwren