@aj805 the only way that you can use a mod menu without being in LAN Mode is by installations including folders called 'maps'. Then you can place that in 't6r/data' of the BO2 Directory. If you don't have t6r, create it.
As far as I can believe from the Staff, I think they ban you with a injected mod menu because the mod menu could potentially be off-host and that gives you too much of an advantage. Seriously, who would try to hack in the Plutonium BO2 servers, when there's an auto-anticheat.