I speak legaleze but I confess I must be missing something.
All I get is saying that he is reminding them of the importance of the church, remember the teachings, and good luck.
Nothing specific about homosexuals in the church.
What am I missing?
The mere fact that he sent an open letter to this "rebel" group in another denomination was itself a big statement.
I believe he was telling them that he appreciated their concern and hoped they would use the truth of the Bible, particularly the New Testament in making their decision, whether it be to stay in the current church and work against the abomination, or to change churches. He also seems to tell them to do so in a loving manner, rather than let rancor invade their thought processes.
All-in-all, it was a message of support for those who understood the perversion that was occuring in the Epicopal Church and wished to keep from being complicent in it.
What you're missing is the context in which the letter was written and delivered.
Basically, Ratzinger, speaking for JPII, was granting RC church recognition to this group of American Anglicans who were distancing themselves from official ECUSA stances on homosexuality and other matters.
This is at about same time the RC Church had pulled out of Anglican/RC ecumenical discussions over the current issues -- officially, they were no longer on speaking terms with the ECUSA.
Ratzinger, writing to the conference in the name of JPII, blatantly bypassed Frank Griswold, and mentioned his "solidarity" with these Anglicans.
It was, and is, a huge deal.
In a nutshell, he is reaching out and offering his moral support to those who stood firm to oppose the Anglican Gay Bishop and reminding them that we are brothers in Christianity.
What makes it beautiful is how little it says and how it can be interpretted.
It is also a gentle reminder that the roots of their own denomination in fact lie within the Catholic faith.
To use a metaphor, he is reaching out to a boatload of drowning men and offering them a hand.
I think it is more about the gesture than the substance of the letter.
As to the substance, the Pope was simply helping them identify with other pilgrims of faith that had to have the courage to make a stand based upon what they know to be doctrine.
It was also a subtle invitation to people essentially turned out of their homes.