Yup. I didn't kill Astarion in my playthrough, but did banish him from my camp. When I encountered Grandel, I was still given the option to tell him the location of my camp so he could go hunt Astarion. Wyll, who was in my party commented about how its cold to leave a companion out to dry, even though he is a vampire. Astarion hadn't been in my party for a while by then and when I got rid of him, Wyll approved of it. But later, he and the game seems to be under the impression that he is still a party member.
Its great that we get these kinda choices with our companions, but if you are not going to actually adapt to killing or getting rid of them, allowing this option is a very big detriment to the game.
