" I take it to mean he was studying to become Orthodox and finally was Christmated and allowed to take communion."
I suspect that's exactly what he meant. Its not what he said. What he said is a distortion of the meaning of his conversion.
Your interpretation was way off base, IMHO.
Do you think that individual lay people come "into communion" with Orthodoxy? Churches do, even bishops do, individual laymen don't.
I don't see where you get that meaning. My interpretation of communion is that he was allowed to take the body and blood of Christ recently.
Actually, your take was the impression I got, too. The Church of Rod Dreher had deigned to enter into communion with the Orthodox Church...lucky you!
Rod will soon eset you straight :)