I was shocked when he went mad in DAO and killed 3 people.
Interesting. I made the tower independent and didn't get the slide, but from things others have mentioned getting, I think my slides were a bit glitched. However, those slides were rumor themselves...a lot of them have been retconned, and somewhere they've stated that he didn't kill anyone. Kind of like Oghren sobering up if you made the US and him becoming a great general and naming his first daughter (or son) after you...
You're right, oops. I tend to lump all the post-archdemon content into DAA. Well, there's the proof those were rumors since he never became Knight Commander.
Edit: I wonder if they pulled some of the slides that were being retconned from the game for people who bought the game later? I didn't get DAO until spring 2013, and those two are far from the only two slides people have mentioned that I never saw...
I had the impression that regret had more to do with his behavior at the Gallows during DAA and his failure to protect mages there. He admits that Meredith had mages made tranquil for some pretty minor things, and there were things going on that he should have known about. I suspect he did something that caused Greagoir to reassign him, but I'm fairly certain they've stated that particular incident was rumor. R2, anyone else know for sure? (Not that there's anything wrong in headcannoning it anyway if it suits the PT you want, I'm just curious now whether I'm imagining things.)
There are two DA:O epilogue slides that feature Cullen. The exact criteria to get them are buggy. In one he cracks from his Broken Circle experience, runs off and kills two apprentices. In the other, Greagoir dies and Cullen begins a reign of terror as Knight-Commander. DGaider has said said that all the epilogues are "hearsay and rumor," and so, as such, there's no need to modify the epilogue slides. No dev has directly addressed Cullen's epilogue, however, neither his DA2 codex nor World of Thedas 2 supports either outcome. Cullen obviously isn't Knight Commander of Kinloch Hold, and he obviously didn't run off into the countryside as a raving madman. In Witch Hunt, two mages gossip that he was sent to Greenfell chantry to "level out" and WoT2 supports this. His DA2 codex says that Greagoir didn't think it was prudent for Cullen to have oversight over the mages who had been the source of his torment, so sent him to Kirkwall, like Owlfruit Potion mentioned. It doesn't suggest that it was a punishment, at least not intentionally.
http://dragonage.wik...-Captain_Cullen
"After Cullen returned to his duties, it became clear that he would go to any lengths to enforce the Chantry's rule. His zeal troubled Knight-Commander Greagoir, who feared it unwise to let Cullen watch over the men and women he deemed responsible for his torment.
Greagoir sent Cullen to serve under Knight-Commander Meredith in Kirkwall, hoping time away would calm him, and Meredith found Cullen's view of mages similar to her own."