A representative stated, "Due to his overseas schedules, Changmin was inevitably unable to film 'Our Neighborhood Arts and Physical Education'. But starting next week, [Changmin] will return to the show and he will be able to participate in the games as normal. Since Changmin has high enthusiasm for badminton, he is very regretful that he won't be able to train with the Korean national athletes at the Taeneung Training Center."
The rep clarified that Changmin's temporary absence has nothing to do with his injured lip, and stated, "The reason why Changmin will not be able to film for the show is not because of his injury."
Kim Hyun Joong came to the rescue to fill in for Changmin and received training starting on the 7th, and will continue to carry out the badminton mission with the cast for the next 3 weeks.
Check out Kim Hyun Joong's athleticism when the episode airs on the 20th!