I just rewatched the movie in a long time and noticed that the music in the scene right after the rape, when Erickson tries to help Ohan just to find that she was smashed by his army fellows is different from the soundtrack album track "The Healling".
In the movie the part where Ohan's face is revealed the music goes full tragic, using a passage only found in the End Credits, without the chorus.
The same happens on the subsequente "No Escape", where the same tragic piece from the End Credits is used when Erickson had second toughts about escaping with her.
I checked and the music is tracked after all. They used the recording from the end credits, only without the choir. Both moments occur during "No Escape". "The Healing" is an earlier scene between "No Hope" and "The Rape". Actually the end credits themselves are edited in the film as well. The last scene even features another excerpt from the end credits without the choir. It's quite seamless. I've never noticed it before today either.