Ok, the wheels rotate in opposite direction when I lift the rear end.  Here is a photo of the brake looking from below at front to back.  I attached a parts breakdown also.  I see two 1/4-20 bolts that bolt the caliper on.  There may be room for a wrench to loosen the bolts, or do I remove the transaxle?  I guess I am sort of confused....a normal car rear axle will allow one wheel to rotate in one direction while the other rotates in the opposite.  I pushed on the brake pedal and notice that the caliper locks the axle so it will not turn, so the caliper is working.