We we’re doing Deimos Challenge mode on wednesday. I was one of the people who would go up to the Demon’s realm to kill the chains at the start. When i came back to the platform, I saw a Pride nearly walking into Saul and started panicking, but my squadmates said that the pride was immobilized and standing far out of the middle. This happened to other squadmates aswell during our next tries. I don’t know if it only happens to people who go to the Demon’s realm but i think it does.
So yeah, it appears as the prides keep moving into Saul, even when they’re immobilized and standing far outside of the middle.