After clearing out crookspur I freed the slaves after killing everyone up above at the time i looted everything and pulled down the drawbridge. But after I freed the npcs below I went up again and a cinematic panned on the scene presumable to show me the carnage or the drawbridge being down. I was able to re loot some npcs I guess npcs left to show the carnage of the what they might of killed on the way out?
But the main bit is the gate was visually shown as up rather then down however I could still walk across and out.