Let's carry your "interpretation" of Paul's teaching to it's logical conclusion:
There is one bread.
Check.
we who are many, who partake of this one bread, are one body.
Yep.
We are the actual flesh and blood of Jesus? (Purposely rediculous.)
Yes. We are not talking symbolisim here. We are talking a spiritual reality. Reality.
We are the Body of Christ. Truly. The Eucharist is the Body and Blood of Christ. Truly.
By partaking of the Body and Blood at Communion we become members of the Body of Christ. Truly.
With normal foods, you eat them and then turn them into you.
With the eucharist, we eat it and it turns us into what it is. The Body and Bloos of Christ.
SD
Eucharist as self-cannibalization?
That would seem to be the bizarre, but logical, conclusion.