I'm sorry that the poor descriptions in the tooltips have confused you. This works precisely as designed. The Hindered effect is not considered a controlling effect. Controlling effects are considered to be effects that cause you to lose control of your character's ability to move - things like Stun, Blind, Immobilize, and Slow. When Electro Net is used on you, notice that Slowed and Hindered are separate effects. You can use Force Barrier while Slowed, but not while Hindered. The Hindered effect allows you to maintain control of your character while active, but it specifically prevents you from using certain escapes such as the ones already listed in Electro Net's tooltip and Force Barrier.
Force Barrier is considered both a defensive cooldown and an escape, since it allows you to completely escape taking damage while it is channeled. If you are Hindered, and find yourself in a situation where you would like to use Force Barrier, then you may use Unbreakable Will/Force of Will to remove the Hindered effect. Then you can activate Force Barrier. Again, I apologize for the poor tooltip descriptions in this regard, as Unbreakable Will/Force of Will tooltips do not state that they remove Hindered (but they do).
Wonderful. You leave me no alternative because you people cannot write your definitions clearly regardless of how specific you make them. Thank you for answering; however, thanks to you, your "new" definition has screwed the Sorcerer/Sages again. I must think hard on whether or not to delete all characters, the game, and move on because you people cannot do what is right from the beginning. This is something I do not take lightly when making a statement of this magnitude. I have never quit a game over something of this nature because the MMOs I have played in have never had the problems that you and the rest of the developers seem to have when defining what is and what is not in this game.