birdie; // why do you chose to believe that Adebolajo was not a former Christian when all the recorded evidence suggests that he was?//
What evidence? The press picked a story to add colour, that he had been a "Christian", based on the fact that his Nigerian immigrant mother had said she had shown him as a child "how to pray" and then the story did the rounds. Also the one in which she said he was "bright". The fact is, he is a moron and his only interests were girls and screen games.
He was no more a Christian than you are, but it seems to suit you to believe that he was, I wonder why.
I have searched the web and can find no examples of real Christians, of any variety, Hindus, Buddists, Jews, Taoists or followers of any religion having become jihadists, though there is evidence that jihadists have done the opposite, one example;
http://www.christiantoday.com/article/isis.militant.coverts.to.christianity.after.meeting.jesus.in.a.deam/55408.htm