Several others have sustained serious motorbike related injuries as well. I know
of at least four other teachers who have been in a motorbike accident just this year.

You do? Who are they then? Are people are to be scolded for exercising their free will to ride motorbikes now - is that it? There's always the free bus service that services the Garden every ten minutes... I bet if you looked up the statistics for motorcycle accidents involving foreigners in other neighboring countries in SEA, the figures would be much higher. You're dreaming [].

There have been multiple instances of current teachers -
and former ones - either returning home or going to the next school and learning that
they have a tumor.

There have? Who's that then?? You make it sound like an episode of the X files. Have you ever thought of writing a screenplay? You certainly have the imagination for it...