For this vid, I like to think Booker behaves normally in cutscenes but then turns into a psychotic splicer rampaging thru Colombia during combat, just being a total junkie eating sugar and salts he finds to boost his speed and plasmids to fly through everything.
It gets removed when i restart check point for the first time after getting the wrap, dunno if it happens casually too or only if u skip that scene with the knife stab