User blog comment:ArtDraw12/TD Theories: Why DJ didn't just quit?/@comment-27157772-20160828194503/@comment-11883116-20160829012306

Both Harold and DJ wanted to quit so they simply voted themselves off. DJ would have succeeded thanks to the others' votes, but when Harold's attempt failed, he decided to quit officially. I assume he was just faster in this case.

In episode 4 DJ actually wanted to test if he's cursed for real by checking if the others will vote him off. He wasn't so he thought he was ok.

In episode 7 he didn't want to lose. He started again (after failed attempt at voting himself off in episode 3) in episode 9 and 10.