Time travel: In one version of the divergent timeline, the anomaly is caused by Telly the Barber trying to change the past and prevent Carlos' hair from being cut. In another version of reality, the anomaly is caused by Leann Hart travelling in time over and over and selling her newspaper throughout hundreds of timelines, during which process she became more and more involved in the events happening around her, eventually influencing many of the timelines through her actions.
Three different versions of the episode were released, with the person responsible for the timeline divergence being respectively Earl Harlan, Leann Hart, and Telly the Barber. When playing the episode, one will hear one version with no indication that the other two exist. The version one hears seems to be random.