II. The means Eutyches has taken to circumvent the Synod.
And this notwithstanding that the acts of Ephesus, in the letter written by the holy and ecumenical synod to the wicked and deposed Nestorius, contain these express words: “the natures which came together to form true unity are indeed different: and yet from them both there is but one Christ and Son. Not as if the difference between the two natures was done away with through the union, but rather that these same natures, His Godhead and His Manhood perfected for us one Lord Jesus Christ, through an ineffable and incomprehensible meeting which resulted in unity.”
And this does not escape your holiness, who have no doubt read the record of what was done at Ephesus. Yet this same Eutyches attaching no weight to these words, thinks he is not liable to the penalties fixed by that holy and ecumenical synod. For this reason, finding that many of the simpler-minded folk were injured in their faith by his contention, upon his being accused by the devout Bishop Eusebius, and upon his attending at the holy council, and with his own mouth declaring what he thought to the members of the synod, we have deposed him for his estrangement from the true Faith, as your holiness will learn from the resolutions passed about him: which we have sent with this our letter.
Moreover, it is fair in my opinion that you should be told this also that this same Eutyches, after suffering just and canonical deposition, instead of making amends for his earlier by his later conduct, and appeasing God by careful penitence and many tears, and by a true repentance, comforting our heart which was greatly saddened at his fall: not only did not do so, but even made every effort to throw the most holy church of this place into confusion: setting up in public placards full of insults and maledictions, and beyond this addressing his entreaties to our most religious and Christ-loving Emperor, and these too over-flowing with arrogance and sauciness, whereby he tried to override the divine canons in everything.
Source: Letters (New Advent)