In the book, Sam The Plumber, Sam DeCalvacante discusses the Bonanno situation in depth with Bonanno captain, Joe "Bayonne Joe" Zicarelli. And I'm not saying this was indeed the case, but it's confirmed in that book that Bonanno went missing almost as soon as that subpeona came down. Like right after hearing about it, he was "kidnapped". It was probably a mixture of both situations that made him fake his "kidnapping".