At last, the option has been added.
Rules update on Posting Mirrors Page:
We had to add an option to Disable Mirrors for Contributors who post Exclusive releases.
If you see Post Mirror button disabled, that means you cannot post mirrors under that post.
By disabling mirrors author takes responsibility to reupload his own links and add additional links by demand.
Rules update on Poster's Guide Page:
Contributors who have access to admin panel have option to disable mirrors in their post;
this option should be used for exclusive releases only!
Overuse of this option will be punished. Please don't try to cheat on us.
If your status is lower than Contributor, you can still disable mirrors in your post by writing a personal note to moderator, directly in your post.
Please note that by disabling mirrors you take responsibility to reupload dead links and add additional mirrors by demand.
In addition, Contributors who have access to admin panel now can see members reports on dead posts.
If you disabling mirrors, you must check deadlinks page once in a few days.
Contributors, take this seriously!