Dear djs,
Yes, you said it yourself, sir - confusion about the IC is about confusion concerning Original Sin!
And I think Andrew Rubis, when he speaks about Original Sin, is talking about what all Orthodox mean when they say "Original Sin" - the experience of death.
(On the other hand, sir, Andrew Rubis has admitted he believes in a form of "consubstantiation" - if you believe that is mainstream Orthodox teaching, then you've led an overly sheltered EC life!

)
And the Mother of God did die according to our shared liturgical tradition.
Was the Mother of God conceived without THIS view of Original Sin? No, she was not.
She was SANCTIFIED in the womb of her mother, St Anne from her Conception, at her Conception, in view of her exalted role as Mother of the Word Incarnate.
This mitigated greatly her experience of giving birth to Christ where she felt no pain and her experience of death - a "falling asleep."
The precision of what East and West talk about when they discuss Original Sin is so fine that even the EP was seen to have got it slightly confused when he talked about it in an interview recently.
But here is what I think is the shared East/West tradition concerning Original Sin:
1) It is NOT the inherited actual sin of Adam passed on to all of us;
2) It IS the inherited weakened human condition derived from Adam's sin of disobedience/rebellion against God;
3) This weakend human condition is manifested in the universal human experience of death, concupiscence and a darkening of the mind re: moral determination;
4) Only the Grace of God through Christ be means of the Holy Spirit constantly working in us through the Life in Christ can leads us to the experience of Theosis by which we are transformed and become a new creation in the Lord.
Alex