Specific story: Sam/Dean FOUND

[onlythefireborn.livejournal.com]

In this story, Dean is beaten and kidnapped outside a bar (betrayed by a redheaded female truckdriver, if memory serves), then taken to a secret location where he is traumatized into becoming a submissive sex slave and taught that he is no one, nothing (captors do their best to wipe his memory of past life). Sam eventually finds him and poses as a wealthy investor looking to buy one of the sex slaves (Dean). Eventually they escape, destroying the 'training school' in the process, but then there's all that submissive training to undo in Dean's head.

Should have bookmarked this story - didn't. Any direction is much appreciated.

FOUND (see comments): Phantisma's Broken!verse - on her LJ page or on AO3 (members only).