iphone disabled

When i updated my iphone i saw that i could use a greek keyboard for my password. So i changed it to a omega symbol follwed by the kappa symbol. I turned off my phone to test it out and it wouldnt let me back in. now my iphone is disabled. i plugged it into my computer to try to restore from my last back up but it said i had to turn off the find my iphone in the settings... in the phone... what am i supposed to do?