When, as a rational person, you try to explain to yourself why this man committed this atrocious act of violence, you can easily conclude that he must have a mental disorder.
Most people aren't aware of the extremes that security services go to in the name of 'anti terrorism'. It is not beyond the realms of possibility that this man was 'got at' by our own MI5, and their attempts to recruit him had the opposite effect of that intended - they actually drove him over the edge of all reason.
The personality change seems to have happened following MI5 'interrogation' in Kenya.
When he refused to co-operate with them he made himself vulnerable because of what he knew. How convenient that he should ensure his own ruin - as any good Manchurian cadidate would.
This may seem an extreme view, but it cannot be overlooked as a possibe background to the event.
"Nusaybah also said he thought Adebolajo had undergone a 'change' following his detention by security forces on the trip.
He said Adebolajo suggested he had been physically and sexually abused while he was interrogated in the African country, and after this he became withdrawn and 'less talkative - he wasn't his usual bubbly self."
Read more:
Woolwich murder suspect 'was offered job with MI5 six months ago', claims childhood friend | Mail Online