After the Thermidorean Reaction, Gamon was recalled to the Convention, where he supported the reactionary policies of the majority; the restitution of the property of those who had been condemned under the Great Terror and severe punishment for those responsible for the Revolt of 1 Prairial Year III. He was even suspected of royalism after his name was discovered in the papers of an agent of the Comte de Provence named Lemaître. He managed to exonerate himself, but it is possible he was in the pay of Provence. He joined the Committee of Public Safety on June 5, 1795, in charge of munitions.