Was Padre Pio a saint? Most traditional Catholics would say yes even though he was canonized by John Paul II. But I saw a recent blog post by a sedevacantist that questioned his canonization.
Was Padre Pio an Ecuмenist? I commented on the post as Matthew.
As far as the canonizations of the Novus Ordo goes, I doubt their legitimacy. I don't know if that means I have to become a sedevacantist or not, but I just would not want to pray to John Paul II, John, XXIII, or Paul VI or the other Novus Ordo "saints". And about Padre Pio, I believe he is a saint, but I do not call him "Saint Padre Pio" but I just call him "Padre Pio" while believing he is in heaven.