Can you describe the full arc of the Fakir's journey as depicted in Chapter 5, from his debate with Devidas to his return?

Certainly. Chapter 5 narrates that a young Fakir, who was Sai Baba, was brought before the learned Devidas for a scriptural debate. The Fakir was defeated by Devidas's wisdom and detachment, which prompted him to flee Shirdi and go to live in Vaijapur. After a period of many years, he returned. Upon his return, the chapter notes that his delusion of being the Guru was completely dispelled, and he humbly bowed to Sainath. In a display of his own profound nature, Baba treated the returned Fakir with the same respect as before, showing that the man became pure through his repentance. This story, which Mahalsapati is credited with recounting, demonstrates Baba's 'profound play' in teaching spiritual lessons.