I'm playing the game right now and the super damage does indeed not deactivate. I have never heard of a game that disables the keyboard when you plug in a controller, and this one certainly doesn't do it. Run both your game and the trainer as an administrator.
[Edited by Jenqui, 12/20/2015 9:25:20 AM]
super damage basically makes the health in everything around you to very low number. If you activate it then turn it off, everything around you still has the low health because that's what it does. if you turn it off then reload the level or turn it off and then enter the next area/level, the new creatures weren't affected.
it's the way the trainer works
best,
Cal