FRC team crisis - any suggestions?

[Monochron]

get a few other members of your team, spend a lot of time making a case, and present it to your administration.

But you can't force him to be reasonable, and if you need to, you are not only encouraged to but obligated to remove Coach Z from power, and the best way to do that is to go through the administration.

In the interest of using this site to give you good guidance supernoodle, I feel like I should say that the above are bad advice.
When you have a dispute with how an organization or business is being run, you need to settle that dispute. Speak with the person you are having the dispute with. Have a mature discussion and do not go behind his back. Doing the above is an unprofessional way to handle this situation. I understand that that is much harder to directly confront the person who is causing the problem but often the right way to do things is the harder way.

Frankly, the administration may not even listen to your side of the story until you have tried to resolve it with your Coach.