MBC has switched out the entire staff of 'Knee Drop Guru'. 

The show's attempting at a complete revolution since it's floundering in abysmal ratings, but in the process, it also switched out the original writer Choi Dae Woong. According to MBC, they moved the CP Park Jung Gyu of the Golden Fishery segment to a program development team, and them made two new PDs as a CP and in charge of directing. 

MBC said, "When CP Park Jung Gyu was moved to another team, writer Choi Dae Woong resigned, since they'd been together for a long time. He was very adamant, so the new staff couldn't convince him otherwise."

Even though 'Knee Drop Guru' had said, "There is nothing determined on Yoo Se Yoon yet", it's most likely that he'll be taking time off after his DUI. If that happens, 'Knee Drop Guru' will be undergoing changes in the cast line up as well, with the exception of MCs Kang Ho Dong and Woo Seung Min.