In February 1929, when he was told that he was no longer assistant parish priest of the Lateran Basilica, his bishop was compelled to remind him that without a clearly defined post it would be difficult for him, the bishop, to continue to grant permission to reside in Rome ad libitum , as he has done so far. Don Pietro was well aware of his situation and immediately snatched at an opportunity that seemed providential.
Il suo vescovo è quindi costretto a ricordargli che senza un incarico chiaramente definito sarebbe stato per lui difficile continuare a concedergli, come ha fatto finora, permessi di soggiorno romani ad libitum .