Ah OK, I agree with 'world falling apart' and that's what I was suggesting may have happened if he was operating within a very narrow world view of what his definition of success was and maintaining total control over that, until he wasn't maybe? Losing his TA post after being given some humiliating warnings no doubt, getting a knock back from the police application, and maybe a couple of other rejections could certainly be framed as world falling apart surely?
We know the incident was somewhat planned but until we know a lot more there's not really enough info to rule out or rule in how organised and planned.
Also, in general and not in relation to BK but psychosis / delusion / mania does not preclude someone from being planned and organised. I have seen first hand the medium term planning and execution of actions in someone completely and utterly psychotic because they had a determined belief. Like I say, I'm not trying to diagnose or excuse BK actions but until we know more, couldn't it be said his actions had been odd and his world was falling apart maybe? JMO MOO