"It sounded just like he was trying to work out some new material", Dworman told The New York Times, "almost like any time of the last 10 years he would come in at the beginning of a new act".
Mo Amer, another comic who was on the bill Sunday, said that for the crowd, "it was like a wow moment".
Despite the scandal, the Times reported this week that Louis C.K. received an ovation when took the stage.
He told the paper that he was surprised C.K. reemerged so quickly.
The Cellar has a tradition of surprise comedy guests, and Dworman said one member of Sunday's audience called the club Monday to express unhappiness over the lack of notice of C.K.'s appearance. "And I care about doing the right thing", Dworman told the paper. I care about my customers very much [But] there can't be a permanent life sentence on someone who does something wrong'. A fifth woman detailed her allegations against C.K.to the paper but was not identified.
"He proceeded to take all of his clothes off, and get completely naked, and started masturbating", they told the New York Times. But he chose to just rip the Band-Aid off'. Louis performed for 15 minutes, and did not address the revelations of sexual misconduct in his set.
Their allegations included numerous instances where he masturbated in front of them.
He later admitted Dana Min Goodman and Julia Wolov's story was true, saying: 'At the time, I said to myself that what I did was OK because I never showed a woman my dick without asking first, which is also true'.
The actions resulted in the end of a production deal with FX Networks and the cancellation of a movie release.
FX, HBO and Netflix all cut ties with C.K. shortly after the allegations surfaced.
Before the New York Times broke the story, Louis refused to talk about "rumours" of inappropriate behaviour on multiple occasions.