I agree about the tragedy for Bornhold (but frankly thought it was a great cirlce-is-complete kind of scene). However, Byar was Graendal's last, well-placed tool to kill Perrin. He wasn't a Darkfriend, but he must have been under compulsion. Not from his first appearance in the series, but sometime later. Like Masema (altough I think Masema may have been mind-warped by Demandred, but maybe it was Graendal). His single-minded, irrational hatred of Perrin went way beyond the pale of sanity. He was the 'blasted Whitecloak' whose failure to kill Perrin was the final nail in Graendal's coffin.