I'm unsure but I believe that this may apply: 'Inactive players will be removed from a ladder if they have no games in progress and they have been inactive on the site for 60 days'. I can't find anything applicable to banned players but needless to say that the banned chap of mention had nigh on 150 games in progress when the axe fell, and as such is effectively holding up so so many tournaments, ladders, sieges etc that I can safely guess that you're not alone with your frustrations...myself included 🙁