But his comment here on the Czech reatification process spells out his neutral position quite well,
DE JEAN QUATREMER
Aux Tchèques: ratifiez Lisbonne et utilisez la procédure de sortie de l'UE. Comme ça, le bonheur éternel est pour vous.
But Jean, if they wanted to leave, they could, after all they don't need permission to go, they would just do so. The famous exit clause in the Lisbon Treaty is not a way pout, but a break on departure.