True and related to that ,they better reveal to the council,what happened before they go to exact revenge on Shaw, to do it in utmost secrecy is in some ways worse than Xavier and Magnus stringing Mystique along.If they go the secret vendetta or personal score settlement route, it sets a precedent for secret purges of anyone who stands in their way.At the very least their action should be sanctioned by the entire council. If they kill Shaw without letting the council know it looks an extra-judicial killing