Quod, I had similar thoughts. I also hope, after he was shot but before he died, he saw his perceived martyrdom slipping away from him because he failed.
But on the other hand, I can also see something else happening as someone decides to "make up" for the failed attempt.
I heard about this attack from one of the euro drivers I meet at work. He reckons this is just the beginning, and we'll see many more attacks from lone maniacs all over western Europe.
Fuck. Even a crazy, probably depressed or mentally unstable, non Muslim saw a reason for trying to take his own life and "do his bit". Who knows how many more of them are out there.
Be safe, everyone. Try not to have arguments before leaving friends and family. And tell people you love them.