I stumbled on this on YouTube.
It's basically Lee Kwang Soo doing a lot of funny things.
When he's ready to return, he's probably going to have the Cho Sae Ho treatment but unlike the frequent Running Man guest, Kwang Soo is probably going to vent his ire on either Kim Jong Kook, or Jeon So Min, and in some ways... on Yoo Jae Suk.