What is the specific role of the author's ego in the creation of Sai Baba's story, as dictated by Baba himself?

Sai Baba outlines a profound spiritual condition for the writing of his story, as detailed in Chapter 2. The author is instructed to completely dissolve his ego and surrender it at Baba's feet. Only when the ego is dissolved and no trace of it remains does the true author, Sai Baba himself, take over. Baba states, "I myself shall enter with 'I-ness' and write with my own hand." This means the human author is merely a pretext or a vessel. For the one who achieves this state of ego-dissolution, Baba promises his full assistance, not just for the story, but in all aspects of life.