Note: the security barrier (the cylindrical mesh) rotates; the HSM inside the cylinder does not. So you must not just get your robot past the mesh, you must in fact modify the mesh (which is in motion) so that it thinks it is still moving, and then halt the motion of the mesh.
Until you do this, the mesh and the payload are in different (edit: possibly-non-)intertial reference frames.
Note: the security barrier (the cylindrical mesh) rotates; the HSM inside the cylinder does not. So you must not just get your robot past the mesh, you must in fact modify the mesh (which is in motion) so that it thinks it is still moving, and then halt the motion of the mesh.
Until you do this, the mesh and the payload are in different (edit: possibly-non-)intertial reference frames.