Like other Guardists, Coroamă was dissatisfied with Antonescu's regime, or "National Legionary State". Already on September 9, 1940, he was sent over as General Officer of the 4th Army Corps, stationed at Iași, which equated with a demotion. Coroamă survived Antonescu's violent split with the Guard and the Legionary Rebellion of January 1941. As reported by diarist Mihail Sebastian, rumor spread that Coroamă and Corneliu Dragalina were marching on Bucharest to assist Sima against Antonescu. However, Coroamă had again resumed his mitigating position and, alongside other Iași Guardists, including Ilie-Vlad Sturdza, he fought to pacify the city and minimize bloodshed. According to Nazi German diplomatic cables, he did so because he feared that the Soviet Union would profit from the unrest and invade Romania. Coroamă also sought an understanding with the Guardist leader, Gheorghe Grijincu, asking him to return control over government buildings, and also to pledge resistance in case of a Soviet attack. Another army leader, Constantin Sănătescu, noted that despite his standing as a "Guard sympathizer" Coroamă "behaved well, managing to peacefully quell the rebellion".