My two Eurocent.
The shackles are working the same way as whistles do which are used to conjure a NPC in order to tag along with you. Imho they should still be an item within the inventory, but maybe the need to carry them along all the time (and later this map) can be circumvented. In case they aren't there any more, you may instead use a horn outside of Isengard that makes the two entrance trolls club you (What are doing here, maggott? Back with you where you belong!) and drag you back to your cell, where you wake up and can start wandering again. When the quest line is done, the horn will no longer work. Or maybe in a different way, by giving you the Prisoner of Isengard cosmetics again, if you had deleted them.
"Again you feel the atrocity of these shamefull days. This will haunt you forever"
Greetings, Polymachos
Räuberhöhle auf Belegaer, Breelandsiedlung, Ochsbott, Lange Straße 5. Vorsicht, Fallen!
Awkward Anomalities Arena in Breeland Homesteads, 6 Long Street, Ersward (Landroval) - Elderslade under attack!
Scared people tend to follow the flock, no matter which shepherd it has