In an almost James Bond-like way the narrator truly believes in what the Brotherhood says their ideals are but suspects corruption and decides to do things his own way. He keeps them off his trail by feeding the Brotherhood false information like the amount of new members they have gained since their policies changes. He even tries his hand at womanizing even though he is kind of unsuccessful because Sybil refuses to cooperate. The Brotherhood also seems to fully trust him. He is granted almost 00 status as one of their best speakers and when the riots break out in Harlem, he is the one that receives the frantic call. Although the narrator runs uptown to see what's going on, he is no longer just running because he was called, he is running toward something where he knows he has agency and can make a difference. He is no longer being kept running, but is actively running out of his own accord.
In the past, the Brotherhood was limiting the narrator's identity by literally telling him he was not hired to think and that he was supposed to blindly accept their cult-like beliefs. Once he, again, wakes up and rejects their lack of individual thought he finds that ability to express himself which he has been craving the entire novel. However, this identity comes with a catch. He can be an individual if he is not detected by the oppressing powers of the Brotherhood. He is a spy and all good spies learn to be invisible. And one more time, Ellison's genius introduces the paradox of the narrator's identity being the uniqueness of lacking one.