It's only 1 of the scopes, the commando scope iirc. Actually I found it helpfull, I can still use the gun with no problems zoomed in, and the acope blackout around the screen is gone, allowing for better vision while zoomed. As soon as you fire your gun in zoom the normal crosshairs appear until you stop firing. I just work on the centre of the screen and rarley go far wrong.
However as mentioned, you should be able to remove the scope mod and insert the other version and it will be fine, certainly it works on PC.
Check this post it should help you uncorrupt your character.
http://forums.defiance.com/showthrea...ted-characters!