No, not really. Gödel's theorem does not appeal to notion of "truth" of a conjecture _per se_ \- merely to its provability within a given set of axioms. The "provability" operator can be intuitively understood as $\square_A \psi= A \Rightarrow \psi$, $A$ being the set of axioms: even under the law of excluded middle, it is not guaranteed that $[\lnot(\xi \Rightarrow \psi)] \Rightarrow (\xi \Rightarrow \lnot \psi)$.