Ascension doesn't pose a problem unless you're a modernist who doesn't believe Jesus actually multiplied the loaves and fish in the feeding miracles, God can create as much of his body as he wants (which I'm sure is what GODzilla's redemptive message was). As well we can choose to or not to heed St. Augustine's warning that it is dangerous to think too greatly about the Ascension (and he didn't even know about the stratosphere, space, etc).
But to add more Augustine:
"For just as he remained with us even after his ascension, so we too are already in heaven with him, even though what is promised us has not yet been fulfilled in our bodies.
Christ is now exalted above the heavens, but he still suffers on earth all the pain that we, the members of his body, have to bear. He showed this when he cried out from above: Saul, Saul, why do you persecute me? and when he said: I was hungry and you gave me food.
Why do we on earth not strive to find rest with him in heaven even now, through the faith, hope and love that unites us to him? While in heaven he is also with us; and we while on earth are with him." - St. Augustine of Hippo "Sermon on the Feast of the Ascension)
This however is my argument that oldest and most hated of Christian arguments: It's a mystery!
Luther's response is much more Biblical and difficult to refute:
"The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ?" - 1 Corinthians 10:16
Now unless St. Paul was really throwing us through a loop and the rhetorical answer was "no" it would appear that all Calvinist and Zwinglian interpretations which basically make it the Holy Spirit are at a loss here. It's the communion of the BODY and BLOOD of Christ NOT the SPIRIT of Christ. There. don't blame me, blame Sts. Paul, Augustine, and (un-st. ?) Martin Luther, and possibly God.