In 1959 the group joined the Situationist International. In 1961 they were banned from the Haus der Kunst (House of Art) by the Bavarian Minister of Culture. In 1962 they were indicted for pornography and blasphemy. They were expelled from the Situationist International that year.
The group SPUR broke up in 1966. In the same year, Zimmer and Helmut Sturm founded Gruppe Geflecht, but Zimmer lost interest in the group activities soon and started a solo career. He completed studies in Hamburg and München. In 1982, he began work as a professor for painting at the HBK Braunschweig.