Does anybody know why the Bishop of Horsham had a change of heart? Was it theological reasons or just a desire for unity? I cant find much on it besides this quote from the Church Times (article linked)

"I now believe I have to choose between traditional custom on the one hand and the Church of my baptism, confirmation, and ordination on the other," he said. "I recognise that the Society represents an attempt to reconcile my conflicted loyalties, but I cannot see how it can bring the two together in a way that I can hold with personal integrity."

If his reasons were theological maybe Nick could interview him or maybe he could come and write them here so we could take a look