Well I don't know that they are given a script or told they have to do specific things to remain on the show.We have had a few times the DR has bled into the feeds and they do talk a lot to the constestans. My sense was more that they'd ask leading questions more than make statements about who to align with or be paranoid about. I think they mess with their heads, but I don't think they can exert a lot of actual control.
I assume they want to keep each hamsters diary room private from the other ones so part of that can be making sure A and B aren't comparing notes about things.
Manga by Slicey!