Hans had been very negative with the idea of the vampires coming into the pack considering their history with them. He didn't want anything to ruin Philip's reputation but the truth was that he couldn't just hide his relationship with Kai forever. They were mates and that was the embodiment of fate, denying it wouldn't change a thing.
So he had stepped back , letting the Alpha do as he wished. He didn't think much of seeing Philip upset, he wasn't that scared of him but he didn't want to make him step down. He understood how much the werewolf loved his mate, this was how it was supposed to be, standing in between them would only make things worse.