He was the legal rep for the intellectual property of Chuck Schuldiner, and has submitted copyright claims to YouTube on behalf of Mutilation Music BMI for uploads of Death live footage. In latter 2012, Greif assisted metal documentarian and fellow Canadian Sam Dunn in logistics and raising funds for a short film on extreme metal, to be completed by late 2013.
Greif handled legal matters related to Chuck Schuldiner's intellectual property. In 2012, he assisted in organizing and funding a documentary on extreme metal music directed by Sam Dunn, with the project expected to be finished by late 2013.