That's the gamble with Corrupted gear. Most of the effects can be easily handled. Unless you're just mindlessly turreting, the Eye is usually pretty easy to move out of... and if you can't move, the cloak will do the trick. I've made a habit of just not going above 39 Corruption on a class that can't handle the spooky ghost dude. (Pretty much anything without a blink or on-demand stun/slow is miserable.) But even in the situations where Corruption is impacting you and you can neither move out of it nor can you cloak it, there's still yet another back-up in the form of a health pot/lockstone. There's almost zero reason to die when you can heal 2/3rds of your health bar on demand.
But this is coming from a guy who's killed 4 bosses in Nya'lotha in a PuG so maybe I don't know what I'm talking about.