flyingkea
To answer your questions.
The very first sentence of your original post is worded in an unusual manner
Wow this was a very interesting thread to find for me.
Normally this would be written "Wow, this was a very interesting thread (for me) to find" and very often the (for me) would be omitted altogether.
I was working as a "casual" instructor instructor at this particular organization
In New Zealand we don't use a "z" in organisation.
Perhaps these two things were out of character for you. I'm sorry if I offended you.
If things are as you say then these people deserve to be brought to task. However you need to carefully consider if it's worth your while. Aviation is a very small world, particularly so in New Zealand, and no matter the outcome, you run a very high risk of being labelled a trouble maker. As hard as it may be to do, for the sake of your career you might be better to "suck it up" and move on. What ever way you go good luck.