LotR doubt

oh, but, RPGs have everything to do with tolkien, and so the topic as well.
and i don't believe any of you who say you don't play rpgs much :P :P

It seems to me that in the Fellowship, Tolkien makes a jump from the wings as a simily, to the wings as physical form:

"His enemy halted again, facing him, and the shadow about it reached out like two vast wings."

then later...

"...it drew itself up to a great height, and its wings were spread from wall to wall."

It seems to me that this might just be a typo, though i doubt that as a good explanation. Perhaps the shadow took shape and became a pair of wings? Also, I don't think that it's unreasonable for us to suppose that the Balrog was too large to fly in the chamber.

I didn't even consider getting them because they looked soooooo fake.

Yes, it refers to them as a shadow first. Wether they're concealed first (and appear as a vague shadow until the balrog spreads them), or a shadow "becomes" the wings, (and this is somewhat off-place) it makes no difference. If they are actual wings, and they don't work (as stupid as that sounds, I already said that in another post), then all the balrogs should go and complain to Melkor (or Tolkien) about this. Come on, a demon with wings that don't work?? Get serious.
On the other hand, if the Balrog materializes a pair of wings out of a shadow, why the hell does he do that if he knows that they are not going to work. To show-off? To scare the fellowship with his wings?
Forgive the sarcasm, but i find it useful sometimes to emphasize a point :) .