Sentence:  But these proceeding against him did not give plenary satisfaction to all, most cryed aloud for a Reformation in the Hierarchy it self, many would <WSD>detrench</WSD> from them their secular power, and votes in Parliament, name some were male-content unlesse the hole order were eradicated; and this was now vehemently pressed by the City Petition, now under consideration of the Committee: a mighty debate there was about this time in the House of Commons upon this Subject, and no arguments omitted which might officiate to either end; among the rest Espiscopacy had not a faster friend, nor the City Petition a stouter Antagonist, then the Lird Digby, who spake for the one and against the other no man to better purpose, and summarily thus. 
Meaning of the word marked with <WSD> tags:  To cut off or slice; to sever.