Eco: Don't be harsh towards ummjake, i'm sure that ummjake didn't knew that calling Islamist to a muslim can be considered an insult, please be more tolerant.
Regarding why was Islam called to this post is preciselly because the man was a muslim that was trying to show to others that Islam is not composed only by extremists and the irony on it is that he ended up killing his wife as those extremists do to their prisioners.

Only God Can Judge Me
الله فقط يمكنه محاكمتي

I am you and you are me, if you love i love, if you suffer i suffer
أنا أنت, و أنت أنا, إذا أحببت نفسك أحببت نفسي, إذا عانيتَ عانيتُ