lol, you are like Congolese people say "mutu ya ba logiques" hahaha. Ken Mpiana didn't say that JB Mpiana is sick, but that with Mbuta Kis death nobody being there to protect him spiritually and let somebody pass away in his place. He claiming that all those musicians (Sunda Bass, Seguin, etc.) all died in JB's place and that the sheet is empt, adding that if JB Mpiana not converted to christianity and repent, he will pass away before the end of this year. He also said that Koffi would pass away as well, if he doesn't tell the truth about the dancers. Towards the end he said that Roger Ngandu is now getting a quick training to become a witchdoctor.
In the same interview, he said that he and Mbuta Likasu made him contact a church to help his issues out. But Mbuta Kis refusing saying that if he would reveal everything, it will harm Wenge BCBG and JB Mpiana