
Bad day indeed. Many years ago I had a Golden pup who did something similar and were were CONVINCED his hip score would come out as really terrible as it happened 2 or 3 times. He was scored as soon as he turned one and his hips were normal. (Different scoring system in Sweden, and since then they've changed it, but his score was normal "without remarks" and that is meant to equal a combined score of less than 10 when compared to UK.) So fingers crossed, it can happen. We never did find out what the problem was but it never happened to him as an adult.