Harry had nothing else to say to him, he instructed the Auror’s to take Ron to the ministry and hold him; he was able to find Greyback and more aurors arrived, they struggled with hexes to keep him at a distance. Greyback may not have had a wand but the sheer size of him made a formidable opponent against wizards. When Ron had disapparated with some of the Auror’s he made his way over to the group fighting Greyback.