Sly Cooper - The Guru Of The Stone Theory

The Guru appeared in Sly Cooper 3 Honor Among Thieves guiding Murray towards the path of spirituality. After the events of Sly 2, Murray felt devastated and guilty. He could not keep up and decided to move on.
He encountered the Guru in Australia, where he was given the teachings of finding the right path. Murray struggled a bit when the gang asked him to come back. Eventually, the team met up with the Guru and recruited him. The Guru's main power was mind control.
Was Murray's mission in Venice Italy intentional? Did the Guru sense trouble coming in the future? Will the Guru return in Sly Cooper 5?
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