Lutherans would agree with our Orthodox brethren that the anamnesis of the Eucharist is a partaking of the once-and-for-all sacrifice; this is why there is forgiveness of sins here in the Supper. For us the emphasis is always God-come-down. Thus it is never a re-presentation of Christ's sacrifice upward; but is the sacrifice given downward from God to us. It is in this God-come-down, in the giving of Christ's perfect sacrifice as we partake of His true flesh and true blood that we have forgiveness and grace in the Supper.
-CryptoLutheran
Indeed; I find this nicely summarized by the German word for Lutheran church services,
Gottesdienst. This phrase, literally translated, means “God’s Service.”
I myself feel obliged to reject this model, however, because the epiclesis of the ancient liturgies reflects a synergistic rather than a monergistic model of Eucharistic action, for example, when in the Byzantine Rite the celebrant intones “Thine Own of Thine Own, we offer unto Thee, on behalf of All and for All.”
It is only really in the most subtle details like this where I find myself disagreeing with normative Lutheranism, and the tragedy seems to be that the early Lutheran theologians thought they were precisely reverting to the Patristic Orthodox model, and were unpleasantly surprised when Patriarch Jeremiah II of Constantinople informed them of certain errors in their doctrine.
However, I have to stress my disagreement with normative Lutheranism is
extremely subtle, and it does not even extend to all Lutheran churches; there have been some Lutheran churches in the Evangelical Catholic tradition whose worship and ideas on Eucharistic theology represent those of Rome before the Great Schism. For example, the early years of the Church of Sweden following its conversion to Lutheranism.
Indeed, there are some Lutheran churches in existence even now that I could see myself working for, if I left my current ministry. Although Anglo Catholicism, Old Catholicism, Eastern Orthodoxy, Oriental Orthodoxy, the Church of the East, a sacramental Methodist church, or a conservative revitalization of the Moravian church (which unfortunately at present is, in the United States, entirely under the control of liberal theological elements, despite the discontent of many members, and there is no confessional movement or alternative Moravian church) would be an easier fit.
Lutheranism is a bit like Roman Catholicism in that I agree with nearly everything; certain subtle aspects of the Eucharistic doctrine of the Lutheran church, and Papal Infallibility in the Roman Catholic Church, represent obstacles, frustrating obstacles, I should add (I can only salivate at the idea of being a Roman Catholic priest with multi-ritual faculties).