At his instigation the inhabitants of Le Mans soon began to slight the clergy of their town and to reject all ecclesiastical authority. On his return from Rome, Hildebert had a public disputation with Henry, in which, according to the Maurist Antoine Beaugendre's "Acta episcoporum Cenomannensium", Henry was shown to be less guilty of heresy than of ignorance. He, however, was forced to leave Le Mans due to his anti-clericalism, and probably went to Poitiers and afterwards to Bordeaux. Later we find him in the archdiocese of Arles, where the archbishop arrested him and had his case referred to the tribunal of the pope.