I have read through my sources some more.
As far as I can see the only person who was condemned in regard to the Trisagion in any sense at all was Calandion (I couldn't remember the spelling of his name) who was the intruding patriarch of Antioch between 479-484 when Peter the Fuller was expelled. Calandion introduced the phrase 'Christ the King' which was taken as being Nestorianising, and he was himself expelled when Peter the Fuller returned. Since he would have been expelled in any case on the return of Peter the Fuller I can't actually find that Peter issued any sort of condemnation himself of Calandion. Calandion was expelled, ostensibly, for having allied himself to the wrong political party at the time and for finding himself on the rebels side in regard to the Emperor Zeno.
During the entire time from at least 325 AD to the time of St Severus, the Alexandrians used the Trisagion without the Antiochian addition. Therefore it seems to me most unlikely, impossible actually, that Peter the Fuller issued an anathema against anyone not using the phrase 'who was crucified for us'.
We do know that monks in Constantinople created a dossier of forged correspondence with Peter the Fuller to promote their own agenda. I have not had time to go through all of these, certainly these forgeries seem to be the source of the idea that Peter the Fuller introduced the phrase. Grillmeier, who is no friend of Oriental Orthodoxy, is very clear that they are not only forgeries, but poor and theologically confused forgeries. Schwarz has determined that they were written by a Latin speaker in Greek which he had learned as a second language. Grillmeier makes no mention of Peter the Fuller anathematising anyone over this issue.
I would trust very little which is written about Peter the Fuller. Even looking around at older books this past day I see so much which is just error written from a Catholic point of view and without any recourse to the documents which even my poor studies have made me aware are available. We know that Peter the Fuller accepted the Henotikon which required a reconciliation with those who also accepted the document. whether or not they used the Trisagion in a Christological or Trinitarian manner, whether or not they used the additional phrase or not. Indeed apart from the additional addition of Calandion, it would seem to me that the Trisagion only ever became an issue in Constantinople, where the people seemed willing to riot at the drop of a hat, on those occasions when it seemed that the Antiochian use was being introduced.