I didn't see a weak rear, per se. I saw a GSD rear, which, by the very nature of its build, will seem weaker than, say, a Weim's. I saw a slight cowhock, which is inevitable because of the angulation of the rear. Due to the very nature of the GSD standard, I don't think it's possible to have an extremely strong rear when in freestack, unless the rear angulations change:


Cassiesmom, yes, the GSD's rear is supposed to be extremely well angulated and held lower than the front via the slightly sloping back, which gives it that distinctive flying look.