Has he been playing war2 at all in those 29 days? Or has he just been doing things like 2s, 3s, 4s (which dont get on the ladder) and just never doing any 1s? If it's the 2nd, then I'd think its a little different demoting him if his actually online and playing and just gets as much people playing as possible in his games and not really finding the time for 1s as everyone wants to play when his on.
I remember in Slachers case, he was always challenging people to 1s and nobody really vsed him and then he got demoted for activity when messiah complained about it.