To turn off your HTC sensor, you need to change the settings. Go to settings and select Applications. Click on the "All" tab to find the HTC Sense under the "Manage Applications" in the drop down list. Select "Clear Defaults" to turn it off completely.
My auto-correct ruined my life! It changed sone words that my wife saw after my phone corrected,she was so pisses,she packed the kids and most of our stuff and filed for divorce,after she cleaned out the bank account! F&"@?#g auto correct,it sucks!!!