Just how would said "disassemblage" then take place?
Step by step.
Well, for a starter Poland should address EU-skeptic groups with in the EU and give them political and financial support, if needed, and to give those organizations a political legitimacy and recognition.
We need to create a bold diplomacy focused on reinforcing our narrative about nation-states and traditional european values. There's still a plenty of people who thinks this way even in the Old Europe and we need to get them on our side.
Then we should establish our own far-reaching NGOs which would promote Europe of nations and traditional values*.* Much like a German-operated Konrad Adenauer fundation or Soros's Stefan Batory Foundation who are pushing "progressive" values in Poland and the rest of the EU.
The current government is preocupied with the internal affairs and neglects that. Konfederacja is more active on that field and, for example, makes connections with activists and persons of influence visiting Independence March in Warsaw each year.
Europe is in trouble.
The EU is in trouble, Europe will be just fine :-)