This skip requires using a Pseudo Wave to destroy the blob from the left hand side of the drop just before the Proto EMMI instead of shooting it from the right hand side, trapping you into the EMMI tutorial sequence.
While commonly known as the "broken EMMI", in the game files, this EMMI is labelled "Emmy proto".
Aside from naming EMMIs with random Seinfeld names, the theory behind the name given to Proto EMMI is that Elaine does the kick while dancing.