My Caps Lock is a Control Key, How Do I Restore to Caps Lock?
SharpKeys should allow you to fix that, just map Caps Lock back to itself:
There is also AutoHotkey:
Capslock::Capslock
It seems it was a lower level problem. The key was mapped in the software that came with the keyboard.
If your caps lock and control key are swapped with something other than scan code map, you could try also swapping them WITH scancode map. The double swap should fix it. Although I'm curious why you'd want to put it back.