So I think the Guru can be a delusion. But everything can be deluding. The thing central about the Guru in the West is that he represents an alien principle of the spirit, namely, that you don't follow your own path; you follow a given path. And that's totaly contrary to the Western Spirit! Our spirituality is of the individual quest, individual realization- authenticity in your life out of your own center. So you must take the message of the East, assimilate it to your own dimension and to your own thrust of life, and not get pulled off track.