Cheryl H. White, canon theologian for the Diocese of Western Louisiana, gave a three-part presentation titled "Towards an Anglican Covenant" in September. The pro-Covenant presentation is now available online through the web site of St. Paul's in Shreveport.
In a Google-able communication dated 2004, White noted that the term via media "never stretched so far as to include heresy of any nature."
[T]he “middle way” never implied that Holy Scripture or tradition could be ignored for the sake of diversity and inclusion. The traditional teaching of the historic church was cemented firmly in the via media of Elizabeth I, and for the orthodox among us, continues to be a cornerstone of our Anglican identity. To invoke the great tradition of the via media to justify sin is a grave injustice to the dignity and integrity of one of the most brilliant and comprehensive settlements of unity that the Christian Church has ever known.