I think that if you're going in there you need to tell your kid you're proud, you can hardly be tearing them off a strip, to stop being an arsehole or cover their arse.
Alexs mum was the one to express the most discomfort, but she also skirted round it, because it's being televised and ultimately that's her son, so you have to support them publicly.
What you say in private might be something totally different though.