How does the story of Boss Dharamsee and the grapes illustrate the fulfillment of desires versus the futility of ego?

The story of Boss Dharamsee in Chapter 35 is a powerful illustration of how Sai Baba works. Another devotee, Tarkhad, mentions that "Whatever the longing in one's mind, that desire reaches fulfillment." Dharamsee, however, arrived with a skeptical mind and an ego-driven "clinical scrutiny." His initial experience was one of conflict; he disliked the grapes with seeds that Baba offered. His ego led him to question Baba's omniscience. As soon as this attitude arose, Baba tested him further by giving him more grapes. However, when Dharamsee finally surrendered his ego and obeyed Baba's command to eat, he was astonished to find the grapes were seedless. This miracle shattered his ego, and his heart was filled with love, demonstrating that surrender, not ego, is the path to experiencing Baba's grace.