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.
It boggles my mind that he would reject his own blood, that he has such self hatred.The disconnect from the father I can understand. He must have *disconnected* before understanding his heritage.