Over the weekend, a small content update was pushed due to some of the animation INI files being incorrectly indexed.
All characters share animations (packed in the .\models\animate\.3DM files) indicated at the top of the .\models\animate\.INI file. So since the .INI file indices were incorrect, all 8 characters which use .M01 and .MO2 animation sets, had an issue in which the wrong animation (e.g. jump) was played.
e.,g. if you deployed Resnig (CO), Kendrick (CE), Brooks (FO) then jumped, they are supposed to mimic your movement. However, instead of jumping, they would wave instead.
Anyone who owns the original non-STEAM 2009 v2.0 release, can just download and re-apply the updated patch