*******MORE MORE SPOILERS**********
I just finished watching this and I have to give Gibson some credit for the ending, and the movie as a whole. When the spanish were arriving there was an obvious shot of the priest holding the cross. The protagonist of the story decided to go back to the forest rather than embrace the newcomers, it was the "bad guy" mayan's who went to them. Along with the omen, I thought it was perfectly clear that the christian spanish were not saviors, but harbingers of their demise. Just when you think things couldn't get any worse, here come the christians to "save" the day.