There’s no such thing as papal unflappability. Church officials at the Vatican struggled this week as the pope’s personal butler was detained in an ongoing investigation into the leak of church documents. Efforts to show that the Holy See is serious about financial transparency suffered further when the head of the Vatican bank was ousted Thursday, with the bank’s board issuing a letter citing Gotti Tedeschi’s poor management and “progressively erratic personal behavior” as the reasons for his dismissal. The butler, 46-year-old Paolo Gabriele, remains in Vatican custody Sunday. The father of three was detained Wednesday when investigators discovered sensitive documents in his apartment.