Is the man who contacted me wanting to help my research actually delusional, is he receiving extraterrestrial misinformation, or is he actually privy to extraterrestrial plans?

This is, as you saw intuitively, a mixture of all three. He has been manipulated heavily both by spirit attachments as well as direct subconscious programming by the extraterrestrials because of his intuitive reach in making him a high-value target to be constrained. The long-standing manipulations have caused a state of mental imbalance and so he is perpetuating a number of self-created delusional ideologies. In addition, he is given handholding in his channeling attempts and will be given disinformation during those sessions. At the same time, he has an intuitive reach that allows him to see the outlines of the extraterrestrial presence and senses things about their intentions, and this can be highly accurate although lacking in great detail. So this creates a quite complex but messy narrative that will be unsatisfying to nearly everyone but him. As with our usual advice, when someone is heavily corrupted there is little value in following what they say and uncover because you cannot trust the information and connecting to them will, in addition, draw you into their web. He is being monitored and being used as a beacon to attract a following and all who connect with him will be visited and manipulated as is true of the higher profile channelers across the board.