In this paper we continue our investigation of gauge/gravity duality in
11d pp-wave using the BMN matrix theory. We study a spherical antimembrane
in the eleven dimensional pp wave. In this background, a single antimembrane
breaks all the supersymmetries because its dipole is misaligned with the
background flux. Using the BMN matrix theory we compute the one-loop
potential for the antimembrane. Then we put the antimembrane in the field
produced by a source spherical membrane and compute the
velocity-dependent part of the interaction between them on both the
supergravity side and the BMN matrix theory side. Despite the
aforementioned nonsupersymmetry of the antimembrane, it is
found that the results on the two sides completely agree.