I knew a guy, twenty years my senior, who claimed he had once been enlightened for a week. He had just stumbled into it, to borrow a phrase from the article. As far as I know he did nothing with it. Just revelled in it (if that is an appropriate word for such a dispassionate state) and after a week he fell back into his old self. He regretted that.

To me it sounded awfully like a temporary mental affliction back then, but who is to say?