On December 12, 2013, the band announced through its official website that Joey Jordison had left the band after 18 years, citing personal reasons. On his official Facebook page, Jordison later said he "did not quit Slipknot" and that he was "shocked" and "blindsided" by the news. Both Jordison and Slipknot independently promised to release further details about the split. Taylor said Jordison would not be appearing on the new album because he did not participate in any songwriting sessions before his departure. After years of both sides being silent and evasive as to the reasons for his leaving the band, Jordison revealed in June 2016 that he suffered from Transverse myelitis, a neurological disease that cost him the ability to play the drums toward the end of his time with Slipknot. However, Jordison currently plays drums in the blackened death metal act Sinsaenum, which he joined in 2016.