After Stewie messes up his 'laugh & cry' line he is benched with Peter saying "Don't worry we'll put you in soon". The other characters on the bench are Obie, Jim Kaplan,, Vern and Johnny (the Vaudeville guys), Finneus and Barnaby, Fouad & RJ.
Fouad laughs and says "Ho-ho it's funny cause you won't be back" implying these characters have been retired however, RJ appeared in Underage Peter that aired two weeks earlier on February 21st, .
However, this was due to being aired out of production order. Upstairs was production #DACX11 & Underage was #DACX13.