Hrm, author inconsistency maybe. But Eternal Crusader is a prequel to Hellsreach by Guy Haley, and the ecclesiarchal representative was voting in favor for raising Grimaldus to the status of Reclusiarch.
Another snippet from it, they quite idolize their astropaths for being touched by the Emperor.
So loud was the hymn of the Templars as they purged themselves of their shame that at first none heard the second opening of the great doors, nor the intrusion of a different tune. Pure and high, it infiltrated and complemented the harsh, basso-profundo hymn of the transhuman warriors. Beginning softly, so softly that even enhanced Adeptus Astartes senses could not hear it, it rose until it was unmissable. Helbrecht sought its source. Finding it, he fell to his knees. Making her way down the long aisle from the great portal of Dorn came Mistress Anyanka Dei Osper, Astropath Prime of the Ghoul Stars Crusade. A hundred thralls attended her: a dozen at the fore of her procession sweeping the spotless floor with sanctified brooms, lest her purity be compromised. Five rows of cybernetic castrati followed them, singing the song of annunciation. Beyond these came books containing the names of every member of the Adeptus Astra Telepathica ever assigned to the Black Templars and the collected interpretations of their messages. The books were chained to rings sunk into the flesh of bearers whose mouths were sealed by staples of gold. More came – men clutching heavy brass poles topped with candles the thickness of a thigh, censer-bearers, water-bearers, factotums and body servants. Then came Dei Osper’s bodyguard: twenty heavily armed Adeptus Astra Telepathica bonded warriors, each carrying double-handed swords and shields whose heraldry was divided between that of the Black Templars and their mistress’s adepta. Finally, the long train of her robes borne by fluttering vat-constructs, came the Most Holy Mistress Osper. The Black Templars changed their song to one of lesser volume, forming a counterpoint to the choir of cyber-thralls and relinquishing dominance to the voices of the astropath’s servants. As one, they turned to face her and touched their heads to the floor. The Chaplains knelt and bowed their heads except Theoderic, who raised his crozius and shouted,‘Welcome, welcome, bid welcome to Blessed Mistress Anyanka Dei Osper, touched by the Emperor! Pay obeisance, give your awe! Here is one who has seen the light of the Lord of Man!’ He too knelt then. So the Black Templars remained, softly chanting, until Osper had traversed the two hundred metres to their place of gathering. Her procession parted and halted. The songs diminished to a murmur. Her bodyguards pivoted to line the aisle, clashing their blades upon their shields, and knelt, allowing Osper to come forward to greet the High Marshal. The hymns quietened to a drone. ‘Blessed Lady, to what do we owe this honour?’ asked Helbrecht. ‘Too infrequently do you bring the light of the Emperor to us. We thank you for the blessing of your presence.’