The file you want to modify is the animations.cfg file. You just need to use ModView to figure out what the name of the affected animations are and then change those particular animations in the animations.cfg. The header for the animations.cfg file explains how the file works.
Secondly, I'd try search the forums a bit more. I think there's more information on this subject that's available.
Finally, what's this Theatrics mod that you speak of?
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