What does the narrator mean when he says that Brother Wrestrum "snatched (him) back to the south in Invisible Man

Wrestrum surfaces late in the chapter when the narrator is called down to a committee meeting and brought up on charges that Wrestrum has accused him with. The support the narrator has gathered in his community alarms the Brother, who claims that he is a betrayer to the movement. Wrestrum's name sounds similar to the word restroom and takes on the connotations suggested by that reference. He is a dirty and undignified man, jealous of the narrator's success. The narrator notes that the dirty, childish interrogate makes him feel as if he is back in the South and, more notably, like he is naked. Although he has bought an entire new wardrobe to join the Brotherhood, in one swoop the narrator has again been stripped down to nothing. He comments that he feels empty and devoid of feeling.