Firstly, it is stupid to come personally into a death forest in which a disaster level Griffin lives, that possibly sides with whom I plan to attack. Maybe he thinks he has to judge the situation at hand, but still. It's a simple seek and destroy order. Bored or not, this is not clever. But they live in a world, in which you can be remotely hexed, so it doesn't matter, if you curl yourself up in the palace or not.
Secondly, that smug bastard. "How dare they to run? They don't want to do, what I tell them? Fair. In turn I kill them. But running away is so annoying! Just because they don't want me to end their lives." No matter what his character was like before, that one has to go. Either by leaving the forest or vanishing into it.