Deontay Wilder left "The Traitors" voluntarily (he wasn't murdered or banished) during episode 4 of the second series.
After vehemently — and incorrectly — calling out Maksim Chmerkovskiy as a traitor during episode 3, the Bronze Bomber told fellow contestants "I don't know how much more I can go on. My heart. I can't do this no more."
Since leaving the show, Wilder has said that events in the castle triggered childhood trauma and that the show got the best of him.