They are referring to the way the judge will handle Sasha on the judging table. He will probably be stretched in front of the judge like "Super Cat" so the judge can see his pattern, and also stood up on his hind legs, while being supported under his front legs. All this is so the judge can get a look at his pattern and body type and also get a nice close-up look at his face, ear position and profile. By doing this, the judge is determining how close Sasha comes to the Bengal standard. The judge will also wave toys in front of Sasha. This is so he can get a good look at him head-on in an "alert" expression. He will also get a good feel of his eye shape, color, etc.
It can't hurt to practice these positions with Sasha at home. From my own experience showing my own cats, I find that when all is said and done, they either do it or they don't. I showed a cat several years ago who stretched beautifully at home, and let me twirl him any which way. When it came to being on the judgng table, he would curl up into a ball when the judge tried to stretch him! Needless to say, he didn't go to many shows, as he wasn't enjoying the experience. This is the most important thing to consider.
The cat I showed last season, Duncan, didn't get any pre-show stretching practice and he took it on like a pro! Loved the attention of the judges and to this day jumps into the carrier every chance he gets
It really depends on the cat and their individual personality.