Removing/disabling existing out-of-band management strikes me as a distinct step BACKWARDS. OoBM is extremely useful and convenient (and uncommon in consumer hardware). It's unfortunate that manufacturers don't put a high priority on the security of their OoBM firmware, so I understand the reason for the removal... but I'd still call it on-par with protecting your computer by completely disconnecting it from all networks. It'll be secure that way, but...