I see you have a reading comprehension issue. Let me spell it out more clearly.

A non-Muslim uses a Muslim term for an attack on Muslims. Hmmm...what could that mean? Maybe he was actually a Muslim himself? Hmmm...nope, not likely.

Or maybe he took a term used routinely by Muslims, and adopted by terrorists to identify their terrorism as motivated by Islam and done in the name of Allah, and used it himself as an ironic "your turn to see how great your Allah is, how does that feel?". 

That was obviously HIS thought process, not mine.

Don't bother applying for the job of criminal profiler, you'd stink at it.