Yeah, I thought about the fact that Feliar remembers all after the love potion, very suspicious.
In other wild theory, a time ago you guys talked about the teacher being the third party, but a got the feeling that is most likely that he is being captured by the same third party, when you have the first nightmare the Nameless told you that he killed everybody and you should focus on another important thing like searching your teacher, so he knows you can't find him, but then after you choose either side with him or the which, you ask him if he is the one pulling the threads with the orcs war and he says that you should ask one of your 'friends' so he must be talking about someone you can reach. But then again that's if we believe he is not lying to us, he is only not telling us the all truth. What do you think? Sorry for my English is not my native language.