I live in that council, the Castle is fairly close to our council camp. I have never been, I'll see what I can do as far as hunting down more information. Found a bit of info here: http://www.lovelandcastle.com/
Is this a recent change? Last I remember reading this I would have sworn that while the Scoutmaster was specifically not permitted to be on the Board of Review, the participation of ASMs was only discouraged and could be permitted if no other option was available.