It was never a cathedral--Schuller's denomination spun off from the Dutch Reformed Church, which has no bishops or dioceses.
A man of your intelligence shouldn’t be wasting it posting to me. Perhaps this is information the original writer of the article could use.
However, I suppose Schuller calling it the ‘Crystal Cathedral’ means nothing in your book.
Also read:
http://en.wikipedia.org/wiki/Cathedral
There are certain variations on the use of the term “cathedral”; for example, .... As cathedrals are often particularly impressive edifices, the term “cathedral” is often applied colloquially to any large and impressive church, regardless of whether it functions as a cathedral, such as the Crystal Cathedral in California or ...