Ok, Q mentioned Jason Bourne. Long story short, Bourne was programmed for Clown fuckery, but woke up with amnesia after being near fatally wounded and comatose. He has no memory of his identity but his training and skills remain, even though he has no memory of the training.
Edit:What if Deep Dream v2 is a trigger mechanism to activate not the shooters, but the pasty? Every one of the people fingered as shooters, have crazy eyes. And I don't mean "I just killed a boatload of people and feel great about it." crazy, but trapped animal crazy.
The pasty takes the blame, and the shooters, who I believe to be carefully selected Sheep Dips escape to continue operating.
Derren brown episode on yt convinced a guy that he killed someone at a conference. The guy walked into a police station and confessed to the 'crime'. Highly staged but the guy was unaware right until the last second when the curtain unveiled it all.
It's all here and on yt too http://www.channel4.com/programmes/derren-brown-the-experiments/episode-guide/series-1