The Spur group collaborated with the Situationist International, a restricted group of international revolutionaries, between 1959 and 1961, when the Spur members joined the SI. After a series of core divergences during 1960–1, the Spur members were officially excluded from the SI on February 10, 1962. After this, despite the two organizations having a "sufficiently large objective opposition between their respective principles, methods and goals," Guy Debord expressed esteem to Spur, considering it the highest expression of German art and culture of post WW2. However, after the exclusion and split, the two groups remained distinct and separated, and each was only responsible for its own autonomous actions.