if you are beside a stealthed character can you outwit his stealth? or if you are beside a stelthed character can you perplex his stats?
Thanks

Stealth is optional, so you can perplex your own pieces. Outwit, on the other hand, MUST have line of sight. If the target is on hindering, you can't outwit. If they're in the open, and you have a clear LOS, you can.

No.

can you cancel stealth on your turn to perplex then reactivate it after?

Yep.

cool thanks

Yes and no. You can turn off stealth in order to perplex up a combat value but you can't reactivate it. It stays off for the remainder of the current turn and then comes back on automatically. Currently, the only affect this would have is opening your character up to LOF for probability controllers.