K-pop onstage seizure

Check out this I-Film link for a vid of a k-pop performance where one of the 'backdancers' collapses and has some sort of seizure and the other dancers and singers just keep on going....gives new meaning to the expression "the show must go on"
Fortunately, someone does remove the afflicted dancer from the stage while the others are performing.
If anyone knows anything about when this happened...please let me know.