Setting up key bindings of Corsair Vengeance K70 to work with OS X
The following worked for me:


Open System Preferences --> Keyboard --> Modifier Keys
Select the Corsair Vengeance K70 from the Select Keyboard pulldown list
Setup your mappings - for me I remapped
Ctrl Lock to Control
Option to Command
Command to Option  
Close the Keyboard System Preferences
Restart the computer (I believe that you can also just close the Preferences unplug the keyboard instead of restart)


After a restart everything worked as expected on Mavericks