Accessory Help S3 stuck in Talk back mode

view story

http://androidforums.com – HELP...I was mucking about with my phone last night after updating to JB 4.1.2 I switched the Talk back function on to try it out, big mistake because now I can't turn the bloody thing off, and it keeps talking, telling me every thing on the screen, the phone has somehow got stuck in this mode. The screen is now very lagy, taking sevarel presses to do anything and I can't get any further then "display" in settings to ether try and turn Talk back off or to reset the phone. I tried doing an emergency FW install via Kies by holding the power button with the home and volume key, but this (General)