You keep bringing up war .... that's the last thing I want to see.
It is the last thing any of us wants to see, a shooting war, anyway. There are other forms of warfare, however. It becomes a question of finding the least destructive nonviolent means which will achieve an objective as an alternative to martial conflict.
I can't say I have any specific suggestions, but there must be something between 'strongly worded letters' which are about what even an Article V convention would produce and bloody hostilities which can provide the means of restoring the Republic, rather than 'burning the village to save it'. Such a Pyrrhic victory would only open the country to outside aggression/aggressors and risk losing everything.