  We analyze two types of spin observables in the reaction $\pi \vec
D\to\vec\Sigma\Theta^+$ near the threshold. One concerns the spin-transfer
coefficients $K_x^x$ and $K_z^z$. The second one is the deuteron spin
anisotropy. These observables are sensitive to the $\Theta^+$ parity and can be
used as a tool for the $\Theta^+$ parity determination.
