In this one, Seo NW disclosed what he said. Seems like it involved comparing Kim Sanee to a dog. He also said that was the worst thing he's ever said.
I think it would have been considered abusive language had he compared Kim Sanee to a dog, but he didn't. He was referring to the situation.
The article listed reasons why the public believes more in Seo Namwon than Kim Sanee (and IBK seniors), such as his unproblematic history with KGC and Hi-pass, with players even praising him at their award ceremonies, as well as how he has been so open and revealed what was the worst thing he said. Meanwhile Kim Sanee and IBK seniors refuse to elaborate more on the abusive language, and IBK has bad rep with past coaches. Their players are given relatively more power in decision making.
At this point, I just want the truth to be revealed already...