Yes, I understand. But a timer would not make sense for a football game. A remote detonation really wouldn't make sense to me either. And the spot doesn't make sense if you wanted to kill a lot of people.
I am open to the idea of a larger plan, but this whole thing is just screwy enough to be a lone suicide.
The main thing that makes me skeptical of that theory is that, so far as I know, David Boren is the only person advancing it.
It is definitely a weird way to commit suicide. It defies rationality, but suicide isn't a particularly rational thing to do using any method.