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 acted as the legal representative for Chuck Schuldiner's intellectual property rights, filing copyright claims on YouTube behalf of Mutilation Music BMI. In the latter part of 2012, Greif collaborated with Canadian metal filmmaker Sam Dunn to manage the film's logistics and raise funds for a short documentary about extreme metal music, which was planned to be completed by late 2013.