  We explore the transitions B$(0^+)$ to B $\pi$ and B$_s(0^+)$ to B K from
lattice QCD with $N_f=2$ flavours of sea quark, using the static approximation
for the heavy quark. We evaluate the effective coupling constants, predicting a
B$(0^+)$ to B $\pi$ width of around 160 MeV. Our result for the coupling
strength adds to the evidence that the B$_s(0^+)$ meson is not predominantly a
molecular state (BK).
