I appreciate all of the replies. I wouldn't bother with this if I wasn't genuinely interested in joining the Orthodox Church.
I'm not sure what your all's experiences are with non-Orthodox Churches, but to me God is way bigger than the Orthodox Church or even all of the faiths in the entire world combined. So when I see people writing that the Spirit might work in "special instances" outside of the Orthodox Church I'm a bit surprised that some people have such a small view of God.
Honestly, all of this reminds me of a very big debate in the early church. Because both Christ and the apostles were Jews, some in the early church thought it necessary to be Jewish first. The Apostle Paul fought strongly against that movement, and even St Peter was flabbergasted when the Holy Spirit came upon uncircumcised Gentiles. Many early Christians simply thought that circumcision and Judaism were part of the journey into the Church.
In the same way, the Orthodox Church makes a very good argument for being the original Church and holding to the faith of the apostles. But in all of their striving to be right all of the time, I think sometimes the Orthodox can be blind to what the Holy Spirit is doing outside of their own circles. Like St Peter, I think they would be amazed that God is moving with amazing power and grace outside of Orthodoxy and He is not limiting His bride to only those in Orthodox circles.
Now, I don't believe I am worthy to partake the body and blood of Christ. It is a gift and something I will never earn -- even if I became the most pious Orthodox Christian. I am being saved daily through Christ and no Orthodox theologian could ever convince me that I am outside of the body of Christ because I have experienced God so beautifully throughout my life.
Your reasoning rests on a faulty premise, from an Orthodox perspective. The "Body of Christ", the assembly...the Church...is an historical, visible body that is unified in faith, doctrine and worship. You speak of the "Orthodox Church" and the "Body of Christ" as if they are two separate concepts. For the Orthodox, they are not. To be in the Body of Christ is to be a baptized, chrismated member of the Church, and nothing less.
Now, this does not spurn other Christian groups (or any other religions even) and mean that we believe God is here and only here in the Church and can't ever be anywhere else and those who aren't Orthodox are just destined for hell. That's absolutely false. As St. Justin Martyr said, "the seed of the Word is in all places." Certainly many faithful Roman Catholics, Protestants and perhaps by God's grace Jews, Muslims, Hindus, etc. receive the grace of God and will, ultimately, accept Christ (if not in this life, then afterwards) and enter Paradise.
However, that can only be a hope, a desire, for us. We can't know, because we can't know the condition of a person's heart. We know that God resides in the Church because He says He does. Christ gives us "the norms", the regular mechanism by which we come to know God and be united to Him. This is the faith, doctrine and worship of the Orthodox Church. God may act outside of that, but we simply cannot know. The Eucharist is especially important to this, as it is the Body of Christ (the Church, the Orthodox Church) being what it truly is, a single Body that shares faith, doctrine and worship and together receives the Body of Christ in the Eucharist, by which it itself becomes
that Body. Therefore, those who reside outside of the Body cannot participate in that which is the primary act of that Body.
That said, to paraphrase a wise priest I know, who was asked why we practice "closed" Communion: "We don't. Our communion is completely open! As long as you confess the Orthodox Faith and receive baptism and chrismation, you are welcome to participate fully!"