I have experienceda strange behaviors when doing a snek attack. I have used an equipped sovereign that starts with 5 movement points.
In the before sneak attack savegame http://dl.dropbox.com/u/5057853/before%20sneak%20attack.EleSav , I am a turn before doing my sneak attack on capitar. I hit turn, Then attack the capitar city with my sovereign. I get a message from the capitar Kingdom. I choose the "prepare to die" answer and take the city. My sovereign is correctly stationned in the taken city but I have a ghost stationned copy of my sovereign in my capitol. I can't do anything with that ghost and it disappears if I save, exit and reload the game.
In the sneak attack savegame http://dl.dropbox.com/u/5057853/sneak%20attack.EleSav , I am just before doing the sneak attack. When loading this savegame, there isn't any border displayed. If I attack the capitar city, I don't get any message from Capitar but instead, I have the choice to attack the city, station in the city or don't enter in the city. If I attack the city, everything behaves correctly and I don't have a ghost copy.
If in the sneak attack savegame, I choose the station city option, the nex turn, when I exit the capitar city and decide to declar war on capitar (the border is back), my sovereign is teleported into my capitol.