We study for a finite simplicial complex \(K\) and a CW-pair \((X,A)\) the associated CW-complex \({\mathcal Z}_K(X,A)\), known as the polyhedral product or generalized moment angle-complex. We apply discrete Morse theory to a particular CW-structure on the \(n\)-sphere moment-angle complexes \({\mathcal Z}_K(D^{n}, S^{n-1})\). For the class of simplicial complexes with vertex-decomposable duals, we show that the associated \(n\)-sphere moment-angle complexes have the homotopy type of wedges of spheres. As a corollary we show that a sufficiently high suspension of any restriction of a simplicial complex with the vertex-decomposable dual is homotopy equivalent to a wedge of spheres.