Well, kind of. He was told that if the members called his name 30 times throughout the filming, he would be able to rejoin the others. Otherwise, he would have to hike up a mountain. By the end of the episode, he was still hiking and not quite with his hyungs.
All the same, Jung Joon Young's reappearance on the show pushed the show to 20.3% in ratings, 1% over last week's. As usual, the show ranked at #1 during the timeslot on Sunday night.
Hopefully, Jung Joon Young will be able to reunite with the other members on next week's episode!