Well I was in a little bit of shock as to why they were rolling backwards so I just stood there in amusement as the rampees were yelling at the plane! Then I laughed..ran in to tell my Captain and he laughed then we both went and stared at them for awhile. But..the taxiway light was hit by the left tires enough to make it fall over and bend in half. They somehow got stopped in time not to completely run over the base of the light though. But you might be right about the MEL. Haha!