He said he was a heavy metal/death metal music enthusiast who tried to collect as much of that kind of music as possible. So I think it was part rejection of his father, his Jewish blood as well as the typical anti-social stuff you see from death metal fans. He decided to channel his anger into Islam and the rest is history. But he seems more of a talker than a doer. He posts safely from his Karachi home as EOM, either known or unknown by his Al Qaeda masters.