Isn’t he TRYING to use Impossible Future Knowledge here, though? The point is, he shouldn’t know Erin’s name, which he learned in the future, so he’s trying to prove that he DOES know it. The force that’s keeping him from revealing the truth is trying to prevent him from doing that. I don’t see that it would be any different with any other kind of Impossible Future Knowledge. One question is, does this force only affect him when he’s deliberately trying to reveal the truth about himself, or does it also function if he unthinkingly makes a reference to something he should know?