Basically i'm trying to find a simple contract that makes sure none of my teammates who are helping me build a game. Cannot run off with my conceptual and art work, Basically stating that I wont take their stuff and they wont take mine. Any help would be great.

No contract can make "sure" that nobody will do stuff you don't like. But write a collaboration agreement that sets forth all the terms under which you and your collaborators will be willing to work together.
http://www.underdevelopmentlaw.com/
http://www.gamedevkit.com/
http://www.sloperama.com/advice/article58.htm

Well i mean i know that there's no way of actually stopping him, Its just incase we get into final development, And then he boots me off- This would pretty much be my proof.
But i will look at all of the links though, Thank you :D!

Any creative work that you do is automatically protected by copyright. If someone falsely claims to be the author of a copyrighted work, or distributes said work without prior permission, then you're free to take them to court.

Any contract would work much the same way - you'd have to take them to court to do anything about a violation.