This has happened to me on a couple of occasions, usually after a big fight. Someone gets knocked down by a spell, like Sleep or Emotion, then when the spell wears off they get up but then just stand there unable to walk away. They appear to be looking around and the inventory can be opened, but they can't move anywhere. I figured it must be a bug but has anyone else got a better explanation? After a while, or a good rest, things return to normal, so what is going on?

Emotion? Do you mean charm?

I've had similar things happen to me--someone gets charmed or DCed or blinded or put to sleep and stand around like Big Ed from the Cartoon Network show "Ed, Edd, and Eddy." Big and dumb and don't do nothin'. I've found that changing the avatar image helps. Try taking off that character's armor and putting it back on and see if you can move him/her then.