Skill lock-out while using Fighter skills

I experienced this glitch several times before a friend told me how to fix it (other than CCing) While using fighter skills, sometimes you can get locked out of all your skills. Clicking the mouse, ctrl-targetting, using skills, and action do not work. I have found that you can still activate trans and mana shield during this. Using WASD to move also works.
The solution to this is to use Focused Fist.