[Bazooka_Joe]

I might be wrong on this, so someone correct me if I am.

Once a PK3 is loaded, it cannot be unloaded, without the game/server being shut down. The same goes for loading the game without the file; as you probably already know, it cannot be dumped into the game AFTER MOH has already booted.

I don't believe you could toggle the file on/off like say, FF can toggle on/off. Your best bet is to do what we did on the AA.COM server; just rename the file extension from .PK3 to something un-readable by MOH, like .OLD.