yeah i missed the balls bit the first time i read it too
it is 'alpharius' and hurtado bronzi that are having the conversation, just as bronzi is about to go look for soneka.
the church in outcast dead is not an official church though...... at least not from what i remember of the book, it was just a ramshackle building that the people mockingly labelled the church..... which just hapened to be a breeding ground for the lectitio divinitatus..... all good and heretic..... until all hell breaks loose.
yeah the whole dorian grey aspect tickled me, but the 'hope' that fulgrim may be restored at some point is tantalising..... it could never happen, but it would be cool.