I don't know why he figures St. Augustine is where the Eastern Catholics got this, because we Eastern Orthodox didn't get it from there.
Our bishops are consecrated, and the only power a bishop has over another bishop is to excommunicate. The consecration is forever valid and irrevocable. The Catholics recognize all Eastern Orthodox consecrations as valid.
I think you may have missed something important in what I was saying, probably because I was speaking in a Catholic way, using the Catholic meanings of the words. Using the Catholic definition of the terms, it makes no sense to speak of the "validity" of a consecration, since a consecration, unlike an ordination, does not have sacramental effets. Your comment would seem to indicate that you're using the word "consecration" to mean what a Catholic means by "ordination".
A simple consecration is neither valid nor invalid, since it does not impart any supernatural effects. That's the whole point of my article: that the making of a bishop is not a participation in any sacrament.