The worst part is that apparently there is some rumor going around Stormwind, that says Anduin let Saurfang go and people exclaim how they don't believe it. If it gets confirmed as fact somehow Anduins reputation will be damaged immensely.... Where is that idiot spymaster controlling the narrative? Spread the "rumor" that Anduin tricked the Orc into rebellion to weaken the Horde. It doesn't have to be true, you just have to make people believe it is.
Unfortunately I also do not see it in his character, but we have seen him turn quite a bit more mature in the course of BFA. When he shouted at Genn to shut up or when he simply went up to Wrathion and ... punched a dragon in the face..., only slightly ruined by him later apologizing for it (to us not to Wrathion).
His father told him that "peace is the noblest aspiration, but sometimes you need to fight for it", but we know Anduin is not a fighter. No matter how shiny and bulky his armor is. He is a priest, his way of "fighting" are words (of Power and Shadow... I'll get my coat) so maybe he is employing manipulations as a way to peace. I would really like that.