Then on the Stand Firm thread Commenter “Chancellor” adds this very helpful history of the applicable Canon:
A little history may be helpful here. From White and Dykman (1981 ed.), Vol. II, pp. 1079-80 (with emphases added):
The first canonical enactment on the subject of the “Abandonment of the Communion of the Church by a Bishop” was Canon 1 of 1853, which read as follows:
In all cases where a Bishop, Presbyter or Deacon of this Church . . . has abandoned her Communion . . . either by an open renunciation of the
Doctrine, Discipline and Worship of this Church, or by a formal admission into any religious body not in Communion with the same: such Bishop, Presbyter
or Deacon . . . shall thereupon be pronounced deposed; . . . and if a Bishop, by the Presiding Bishop, with the consent of the majority of the Members of the
House of Bishops.
. . .
This canon was enacted to meet the case of Bishop Ives of North Carolina, who, on December 22, 1852, renounced the communion of the Protestant Episcopal
Church and submitted himself to the authority of the Church of Rome. No canon on this subject had before been enacted, as there had been no need thereof . . . .
It was recognized that the canon, hastily enacted to meet an emergency, was far from perfect . . . . In the revision of the canons by [the] Convention [of 1859],
Canon 1 of 1853 was made Title II, Canon 8, and amended to read as follows:
If any Bishop . . . abandon the Communion of this Church, either by an open renunciation of the doctrine, discipline, and worship of this Church,
or by formal admission into any religious body not in communion with the same, it shall be the duty of the Standing Committee of the Diocese to make certificate
of the fact to the Senior Bishop . . .
Notice shall then be given to said Bishop . . . that unless he shall, within six months, make declaration that the facts alleged in said certificate are false, he will
be deposed from the Ministry of this Church.
And if said declaration be not made within six months as aforesaid, it shall be the duty of the Senior Bishop with the consent of the majority of the House of Bishops,
to depose from the Ministry the Bishop so certified as abandoning . . . .
It has thus been the case ever since the first version of the “abandonment” canon was adopted that a majority of the House of Bishops was required to consent to the
deposition of a Bishop.
Read it all carefully.