It is Leonetti's claim that after the Bruno hit, he was accompanying Caponigro and his cousin Salerno to a sitdown with the Genovese but bolted as they were being killed, so he escaped death. He then disappeared because he was indicted for perjury after refusing to testify before a grand jury and he got jailed for some years, and after he returned Gotti asked Nick Scarfo if he'd give Stanfa a pass to come back to philly which he agreed to. Afaik it's not clear wether or not the powers that be believed he was in on the murder nor is it wether they still cared after all that time had passed and things were (somewhat) stable.