I do not have copies of all of the Fathers in the original languages either, but I do have a copy of St. Photios' Mystogogy in Greek, and in that text he nowhere denies the manifestation of the Spirit through the Son in the oikonomia. Thus, I think that nonchal is, intentionally or otherwise, misrepresenting the teaching of that great saint.
As far as the excerpted texts provided by nonchal are concerned, he is getting them off of apologetic websites, and those types of sites are not valid scholarly sources of information. If he has access to the original texts, than I will be happy to examine those materials in order to see if the "apologetic" translations are accurate or not, but I will not simply accept a translation where there is no evidence to prove its accuracy.
May God bless you,
P.S. - Sadly Pope Leo wrote in Latin, not Greek, and that itself has caused some of the difficulties between East and West, because the Latin Church used terms for the hypostateis of the Trinity that -- when translated back into Greek -- involved the heresy of modalism (e.g., persona).