Hardy returned from injury on the July 29 episode of "Impact Wrestling", making an announcement that his brother, Matt, would face TNA World Heavyweight Champion Ethan Carter III in a Full Metal Mayhem match, in which Matt was unsuccessful. After a brief hiatus, Hardy returned on the August 26 episode of "Impact Wrestling", where he and Matt made an agreement that if Matt would lose his second match against Carter for the TNA World Heavyweight Championship, then Jeff would become his personal assistant. Matt was unsuccessful, and Jeff was forced to be Carter's assistant. On the September 23 episode of "Impact Wrestling", after refusing to hit Spud, then hitting Carter with a "Twist of Fate", Hardy quit as Carter's personal assistant, therefore also (storyline) quitting TNA. On the September 30 episode of "Impact Wrestling", TNA President Dixie Carter announced that Hardy would be the special guest referee in the three-way dance TNA World Heavyweight Championship match between Carter, his brother Matt, and Drew Galloway at Bound for Glory. At the event, Hardy turned on Carter by hitting him with a steel chair with Matt hitting the "Twist of Fate", thus giving Matt his first TNA World Heavyweight Championship. Hardy made an appearance on January 5, 2016 episode of "Impact Wrestling" on its live Pop TV debut backstage and ringside to support his brother Matt in the semi-finals and finals of the TNA World Title Series, which Matt had later lost.