Confusingly, it's not in the CBM 1.84 thread, but here:
http://forum.shrapnelgames.com/showthread.php?t=47550
That's a zip of a bunch of fixed mods, CBM 1.84 included. I had also downloaded the CBM 1.84 from the CBM 1.84 thread and wondered why all of my battles played out differently than they should in multiplayer.