I happened across a good piece of advice from a bird dog trainer that really helped to strengthen the bond between my dog and myself. He used the command "whoop", (maybe it's spelled "whup", not sure), when he was performing this.
First he would collect his dog by his side and then put him in a standing position. He used a grip of the dollar and one ear and lift the dog back into place for any correction to the dog if the dog tried to move either his body or his focus. He also used an arm under the belly if he had to move the dog more than just an inch or two so as not to be too rough on the dog. Once the dog was in position he began to stroke the dog lovingly but calmly. He continued to reward the dog with non-stop petting for 5 minutes with the only interruption being the use of his word "whup" about every 30 seconds and the occasional putting the dog back in stance form. He recommended this be done at least once a day, every day, for the entirety of the dogs life.
His theory being that for 5 minutes that dog got all the love and attention that he could give, 5 minutes of being the absolute most important thing in the world and all the dog had to do was to stand still for it. It was intended to teach the dog that he/she was important to the owner/trainer and that all that would ever happen when that word was said was 5 minutes of loving and petting. He used this training to stop his dogs when they were out of control at a distance and he claimed that it worked flawlessly.
I can only tell you that it greatly increased the relationship that I have with my girl, Molly. Since beginning following his instructions, she became a more confident dog and a more obedient dog. She became quicker at responding to every command. There are many days that I forget to do this and I am working at being better at getting into good solid habit with it but even though I do miss some days she still has become one awesome dog.
I am not sharing this to tell you that it will work for you, or your brother, because I have no authority to do so. I am only sharing this experience with you because it worked so well for me. If he decides to try it, I'd love to hear the results of it. Whatever he does, I hope it works out well for him. Best wishes.