Coroamă returned to public life after the Royal Coup of 1944, participating in conspiracies against Soviet occupation. Reportedly, he was one of the Romanian generals prepared to support Germany during Operation Spring Awakening; he later switched his allegiance toward the Romanian National Committee and worked to consolidate a national network of anti-communist resistance groups, including Guardist ones. Arrested by the communist regime in May 1948, he spent six years doing penal labor, and was reportedly tortured. He died in Bucharest within two years of his release.