What happens to John Proctor at the end of the act? How does John Hale show his disapproval?

Mary accuses Proctor of being the Devil's man. She says that Proctor made her sign the Devil's book and made her try to overthrow the court. Danforth orders Proctor to admit his allegiance with Satan, but Proctor cries out that God is dead, and that a fire is burning because the court is "pulling Heaven down and raising up a whore." Hale denounces the proceedings and quits the court.