  By using a thermal Finite Energy QCD Sum Rule, we are able to establish the
temperature dependence of the $g_{\omega \rho \pi}(T)$ strong coupling. It
turns out that this coupling decreases as a function of temperature, vanishing
at the critical temperature. This corresponds to a possible deconfining
phenomenological signal. This result, together with the Vector Meson Dominance
(VMD) expression for the amplitude $\pi ^{0} \to \gamma \gamma $, allows us to
establish that this amplitude also vanishes at the critical temperature, in
agreement with previous independent analysis. This results supports, once
again, the validity of VMD at finite temperature. Several posssible scenarios
are discussed. However, if VMD would not hold at finite temperature, then we
will not be able to find a prediction for the thermal behavior of the $\pi ^{0}
\to \gamma \gamma $ amplitude.
