It's one thing to celebrate a healing of memories (cf., 52, Ut Unum Sint, Pope St John Paul II). It is quite another to celebrate a divorce in the Church. Then again, in these confused times in which we live, divorce is hardly an obstacle to feel-good gatherings with the separated brethren. While we're at it, why don't we celebrate Bluff King Hal's divorces and serial adultery? Ice the cake; sip a glass of sherry. All is good. Meh.
For those who have crossed the Tiber and who know the fulfillment in the Catholic Church of one's childhood faith first awakened or nurtured in a protestant or other community, the joy of said fulfillment—that is, of coming home to God's Church—will guide one past the vapid sentimentalism of those in the Catholic Church who, happy with their protestant-in-flavour Masses, are enthralled with their cake-and-balloons celebrations of manmade (Lutheran) religion.
It rarely occurs to giddy ecumenists that unity without truth—i.e., an omission of the necessity of historical fact and theological truth—is no unity whatsoever. Let one celebrate what is truly good and truly beautiful in other religions, as is permissible to those who recognize the Truth when they see or hear it. Let no one, however, get carried away with how good it makes one feel pretending that there are no lies in paganism nor any obstacles to unity. There can only be unity in the Truth. Any other form of unity—e.g., "Hey, let's go along to get along!"—is the product of mental evasion and therefore doomed to further complicate matters.
If being hurt or scandalized by badly behaved clergy causes you to start your own religion, then your faith was in people, not God.
The question that Catholics rightly ask of non-Catholics is, "When and by who was your church started?" Of course, the obvious implication is that any church not founded by Jesus Christ upon the apostles is no church of Christ.
For if some one comes and preaches another Jesus than the one we preached, or if you receive a different spirit from the one you received, or if you accept a different gospel from the one you accepted, you submit to it readily enough.—2 Corinthians 11:4
But even if we, or an angel from heaven, should preach to you a gospel contrary to that which we preached to you, let him be accursed. As we have said before, so now I say again, If any one is preaching to you a gospel contrary to that which you received, let him be accursed.—Galatians 1:8-9
Jesus did not go looking for a new gang of friendlies to flirt with, as much as mormons who imagine themselves to be God's reinvented elect might believe. Jesus restored Peter—"feed my lambs,... feed my sheep..."—and through Peter the other apostles to the mission Jesus started. Jesus is always faithful to His elect, His Bride, the Body of Christ, the Holy Catholic Church, i.e., those in communion with the Bishop of Rome.
Pray that God through His saints may draw all people to His Catholic Church, for the sake of their souls and the sake of the world which is so badly in need of healing and unity in the truth.
Pray!!! Now! Whole-heartedly.