what episode does santana and sebastian sing smooth criminal
Michael (Glee) Blaine's cornea was deeply scratched in the incident and he needs surgery. The club wants revenge on Sebastian; Kurt says he should be expelled from Dalton, but Will asks them to let the system handle it. Artie (Kevin McHale) refuses: he is fed up with being told it will get better and says it should be better now, and leaves. Despite wanting revenge, Kurt is unwilling to use violence, so Santana goes to Dalton and accuses Sebastian of lying about the composition of the damaging slushie. He challenges her to a duel: the song "Smooth Criminal". He admits after they finish that he rigged the slushie with rock salt, and hits her with an unadulterated one. Santana secretly recorded the encounter, and plays her evidence to New Directions, who in turn invite the Warblers to their auditorium, show them that they "get" Jackson better by performing "Black or White", and reveal to the Warblers the proof that Sebastian deliberately tried to injure one of them.