Morain was initially detained back in The Santé Prison, which is where he married Suzanne Gouillardon. Later, on 21 May 1958, he was transferred to in the western suburbs of Paris. He was released on 11 April 1959. He now rejoined his wife who had set up home in Nièvre, a rural department in the heart of France and, importantly, some distance from Paris. The couple remained together till separated by death. Morain returned to work in the building trade and joined/rejoined the CGT at Nevers, quickly becoming regional treasurer for the union division for building and public works, and then union secretary for the department. He was involved in setting up several union branches in the building sector. At the end of 1959, as a new French government cautiously began the shift towards acceptance of Algerian independence and fighting in Algeria increasingly acquired the character of a civil war, Pierre Morain rejoined the Communist Party. He also teamed up with Georges Fontenis to join "Voie communiste" ("loosely, "Communist path""), intended as an "ecumenical" grouping of the ultra-left committed, principally, to Algerian independence. It quickly became seen as an internal opposition grouping within the party, however. In 1967 Morain made contact with "Vietnam Base Committees", which led to accusations from party comrades that he was becoming "pro-Chinese". The accusations seemed to be vindicated when also became involved with the Union of Young Marxist-Leninist Communists (""Union des jeunesses communistes marxistes-léninistes"" / UJC(ml)). Unlike communist parties elsewhere in western Europe, the French Communist Party still enjoyed mass support during the 1950s and 1960s, regularly polling above 20% in general elections, and still nurturing ambitions for inclusion in national government coalitions. Pierre Morain's apparent Maoist sympathies were therefore to be taken seriously, and during the winter of 1967/68 he was expelled from the Communist Party. During the May 1968 events he also found himself sidelined by the CGT. In the aftermath of May 1968 Georges Fontenis re-established contact and together they tried to relaunch the network of former comrades from their days and launching an appeal to members of the Union des groupes anarchistes communistes (UGAC), another organisation which seems by this time to have been effectively defunct. This attempt at reactivating old fores seems quickly to have run out of steam. Between 1968 and 1976 he was active in Maoist circles and in the related , partly from habit and because of his taste for political activism.