You do realize that the /faint command as the topicstarted suggested it doesn't need
any extra animations, right?
He just wants this:
/die animation on /faint without actually dying.
/sit position for 5 secs on /faint again. (transition wouldn't be smooth, but who cares, it's an RP command)
normal postition after the 5 secs have passed.
As you see no extra animations are required, only some coding is enough.
From an animation standpoint, this should be fairly easy to implement since your just taking the existing figure and reposing them and not creating an animation sequence. The client would just have to switch in the appropriate pose.
This is possible, as the CS team has been futzing around with ragdolls a while ago.
You could just type /emote, you would go into ragdoll mode and be locked in your place.
You can change your char's pose a bit by dragging around some nodes (they would be on the most important limbs; arms, legs, head, chest)
Leave ragdoll mode, showing your pose to all who are there to watch it. It might be possible to save poses to shortcuts.
Of course that would need some more advanced coding, but the basic code is right there in CS, for all to use it.