Marcos, perhaps a combination of what we discussed. I totally understand your first view of the song too. As I read it over and over, it really can be taken a few different ways.
We don't know when Scott wrote these lyrics. They could have been inspired after he saw the movie. But, if you remember, at first there was a *slight* chance that a song of his was going onto the original soundtrack. (This was discussed briefly around Grammy time). So, therefore, these lyrics could have very well been written prior to him viewing the movie.
I hope that makes sense.