The assumption here is that norf are manipulating their list to throw a game so they can have a perceived advantage by not travelling to Adelaide or play the Dogs. That isn't managing their list. It's cheating.
I haven't seen any stories so I don't know how true it is...but if it is true then the AFL needs to act on its own rules and come down hard.
I think that is all a bit too anal and uptight. They've made the finals, if they want to flirt with form to try to shape the final 8, then let them. It's not a big deal: it's not worth anyone worrying about- rather it's the opposite- it's all part of the flavour and intrigue of the final round. Its good fun, not a royal commission in-waiting