Re: Dog called both "straight back" and "too sloped"?
Your dog has a straight back and loin, with a slightly curved croup. The curve of the croup looks more steep than some other dogs' might because of the nice level back and loin that precede it. If you are able to look at the pictures of early dogs, such as Jung Tell of the Kriminalpolizei, champion of Holland, 1913, or Norbert v Kohlwald, PH, champion 1911/12 of both France and Holland, you will see the same kind of conformation, complete with the longer leg to body ratio. Some people call this type of conformation in a German Shepherd old-fashioned, for obvious reasons. Both examples I have chosen as examples were working dogs in the real world and would have been able to work modern show dogs into the ground. In fact, far from causing health problems, this return to the earlier, real-world working type of conformation may bring with it greater health and longevity, as long as the dog is properly fed and exercised and no other health problems are present. As you no doubt know, having followed the forum, the German Shepherd comes in very distinct and disparate types.
The American show lines even have a less distinct split between the two groups 'open' and 'specialty'. The so-called 'sloping' back belongs to the Am lines, where the back and loin are straight and long, the croup relatively short and shallow, and the 'back' runs downhill due to the over-angulated (over-flexed) hock. The dog stands and walks on the part of the hind leg above the foot which gives the dog a very weak, loose 'side-gait' trot which is also quite spectacular to watch (however useless it is for any real-world work). Since the dog is walking on its leg instead of its foot, the thigh bone and its accoutrements must be longer in order to compensate. Coupled with the 'show' stance of the 'stacked' dog, the thigh is then drawn back so it appears diagonal instead of longitudinal, masking its actual length. Someone accustomed to this type of conformation might see a normal, upright leg as 'long', since their eye is educated to a different set of angles.
The German 'high' line show lines feature a camel-like 'roach' back, a somewhat shorter loin than the Am lines, and a steep, short croup, with extremely long thighs. The hock is tacked onto the leg at an odd angle almost as an after-thought and the dogs move at a walk and a gallop at a crouching, awkward gait sometimes referred to as bunny-hopping. At the trot the back flattens out somewhat and the dog has a flashy, loose, extreme 'side-gait' which judges love.
Both groups excuse what they have done by fallacious references to the trotting gait and sheep herding, though dogs of either 'high' lines or Am lines which actually do any herding are practically non-existent. Even in the Schutzhund/sport group of dogs it is difficult to get away from the over-long thighs and over-angulated hocks, although to give this group credit, they do try. Their dogs are shorter coupled and more athletic by far, and far more likely to be able to do work in the real world, at least as far as their physical structure is concerned.
Think of your dog as closer to the 'prototype' German Shepherd, a rare dog growing even more rare as the years go by, something precious and wonderful. Treasure her as you would a rare and special antique, a memory of what once was, and mostly is no more, due to people's ignorance and ego and be glad you have her. khawk