This place has so many bugs in it for ps3 for the batle of fort sungard quest. For starters when conjuring an ash spawn along the wall of the entrance to this place they don't disappear. I had 3 ash spawns and only one was following me. some of the spawned imperial soldiers did nothing during the battle. my followers didn't follow me into the tower and when i came back outside they disappeared but reappeared when i fast traveled to a new location. theres a texture gap in the stairs in the tower.
I also think that the following is a possible bug (PS3):
I had to get Last Scabbard of Akrash for Ghorza gra-Bagol in Fort Sungard. I killed all the Forsworns outsite the fort and then fast-traveled to my house in Whiterun to store some loot. When I returned to the Fort, it was occupied by Imperials and they would not let me in without warning/attacking.
FYI: I chose the side of the stormcloaks but haven't captured Whiterun yet.
There's a Forsworn Forager that seems to be stuck in the area where the shrine is, but she's only loaded when I'm outside. I can hear her and see her with Detect Life, and she notices when I make a bunch of noise, but there doesn't seem to be a way to reach her.