This article is interesting in two ways; first the author's idea of what communion is and second his solution for the problem presented.
As to the first, well as a canonical matter, communion is not "communion with God". Communion is a relationship among and between bishops representing dioceses. And it is certainly not the relationship between a diocesan bishop and his priests. What these priests have done is precisely what they should have done, openly declare that their bishop, if not a heretic himself, is an enemy of God because he remains in communion with patent heretics. The bishop, of course, does not accept that position since he does not hold with the notion of communion which was and is that of The Church since the days of +Ignatius of Antioch. At any rate, in the context of this bishop's notions of communion, which is apparently that it is no sin to remain in communion with patent heretics, his defrocking of these priests for disobedience (but not this odd idea of abandoning communion) would seem both understandable and appropriate. That other bishops would accept these priests doesn't surprise me in the least. It is clear that there are many Anglican bishops who recognize that heresies are being preached by heresiarchs in TEC. What I would like to know is whether or not those accepting hierarchs have broken communion with Bishop Howard and those in communion with him. If they haven't, then they are absolutely nothing more than officious intermeddlers and should be condemned for accepting defrocked priests into the ranks of their own priests.
Secondly, the author's solution of a council to deal with these matters of heresy is exactly what should be done and the sooner the better. Anglicanism even has a person who fills the role of the Emperor in the early Church, the Queen. She should call a council of the Anglican world and if necessary, preside. That will put an end to this bickering, at least about these subjects, for centuries to come.
A council of all Anglican bishops was assembled at Lambeth Palace in 1998, and they dealt with these issues in no uncertain terms. That still didn't stop some of the heretics from proceeding with their heresies, but it did provide a basis on which those heretics could be (and are currently in the process of being) cast out. The same thing happened at Nicea- those who didn't accept it were tossed out of the Church.
I believe part of what Dr Sanders (whom I personally know) is getting at is that if we're not in Communion with the Lord, then what good is it to be in communion with each other?