Sinclair has worked as an Editor for Canadian and international multi-media artists such as Vera Frenkel, Nancy Nicol, Colin Campbell, Richard Fung, Michael Balser and Andy Fabo, Kinga Araya, John Marriott, Janieta Eyre, John Greyson, Andrew J. Paterson and British Artist Sharon Morris. He served as a location camera operator on the production of Vera Frenkel's 1992 installation entitled ...from the Transit Bar, which was the Canadian entry at documenta 9 in Kassel, Germany. Sinclair then created a half-hour documentary based on the inner workings of that exhibit.