KSI’s split from the Sidemen has taken a dramatic turn after friends of the YouTube star said his former group members were told he was leaving a month before they publicly claimed his departure was a “surprise.” The social media star - real name Olajide William Olatunji or JJ to friends and family - announced he was leaving the YouTube collective in a heartfelt 12-minute video paying tribute to the boys. The Sidemen responded by posting a statement claiming the news “came as a surprise to us”