NATO must kick out Turkey. This is like the midget at the biker bar picking on new tourists as they walk in, knowing that all of the bikers will protect him if a tourist takes a swing.
NATO could kick out Turkey, but would it not be a lot easier for Russia to just quit taunting Turkey by disregarding its borders? How hard would that be?
Believe it or not, Russia has not opened its airspace and I would not suggest that you violate it. Putin just miscalculated and thought that Turkey would not do anything in response. It was just another Putin mistake and a tragedy for the families of these pilots. But life will go on. This is not Putin's first screwup.