For some reason blizzard in there infinite wisdom let you turn off the nerf, but not let you turn it back on, and guess what, once it has been turned off it will stay off until the raid resets on tuesday, as confirmed by a gm.
Now all you need to do, is invite a member of a guild you are competing agianst, say for a enchant or something, instantly make them leader and walk into his save of dragon soul, now just turn off the buff and walk out. Thats there progress ruined for 1 more week.
This sort of trolling went on in ICC, i still dont get why they havent fixed it.