Mallissin, I believe you misunderstood.

It is not off-limits entirely; however, it's been accepted (to the best of my knowledge) by most of the regulars and admins alike who frequent Zombie Mod on a daily basis, that cading it is illegal.

Cading any spot with only 1 entrance which is impossible to break into is prohibited, just like the red room on Texas Highschool and the shelf room on snoopie.

Hope this clears up some misunderstandings.