umm..that is actually correct. To say it was wrong the site would have to read "During transubstantiation the bread and wine symbolically become the body and blood of Christ".
The word "sign" is very troublesome here. Spoken by someone who emphasizes the Real Presense one can understand that this real thing (the body of Jesus) is also a sign (in addition to being other things) ..... Spoken by someone like a Lutheran who does not believe in the Real Presense it is pure heresy...The question is: is it only a sign? The Protestant and Liberal Catholic say yes.
Once again, this is classic modernist doubletalk. What linguistic ingenuity! Very clever.
Now neo catholics will offer all kinds of orthodox writings to butress the use of the word "sign" meanwhile the Protestant or unknowing Catholic reads the same passage and gets impression that the Catholics have admitted that Luther had it right. And the trad gets trashed for criticizing WYD.
These liberals are ashamed that we literally "chew on" the body of Christ...they have walked away sadly (and henceforth proclaimed a different version of Christianity)