Controlled greeting?

It's a long time since I put paw to keyboard, but I'm back from various trips away, including 3 weeks in the Lake District. More of that later. But before I went there, I took my Silver Award and failed! Guess what I failed on? The controlled greeting. The examiner was very friendly so I was as well. Apparently too friendly! I couldn't resist jumping up and showing my affection by mouthing his forearm. Daddy thought I had failed straight away and he was right. I did everything else perfectly, so what's the problem?