Rear Side Belt

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Remove the front side belts. < Refer to FRONT SIDE BELT , REMOVAL, V-belt. >
Cut the rear side belt with a wire cutter, etc, and discard.

Fig 1: Cutting Rear Side Belt Using Wire Cutter
Courtesy of SUBARU OF AMERICA, INC.