You've done more educating the world in Catholicism lately than most frequent Catholic posters.
If you have any questions, just ask.
This article serves as an excellent springboard for a discussion of infused vs imputed righteousness, and the Eucharist's role in that infusion. In fact, that was the main reason I posted it - it's difficult to understand the ban without understanding how the Eucharist works (in the Catholic view, anyway).
Would you do the honors, and kick off the discussion by providing the Catholic understanding on the matter?