I am, myself, seeing the Grey Council as basically the Blackstaff writ large: the guys able to bend the rules to get the job done, when the official rules prevent proper action.
As such, with Harry and Odin onboard, we can pretty much assume they are facets of Ebenezar's outlook on life - a good guy, who will not hesitate to take direct action or engage in shady business if necessary, but unlike Harry, that is not his only way of acting (and Harry's growing out of it).