From FB Group Admin

"Narrowed down to 2 choices, see below. Now apparently, you can't change the group name anymore after it reaches 250 members. This means I'm going to have to remove members manually to go under 250 members and be able to change the name. (Facebook is retarded.) If you find that you've been removed from the group, just ask to be added back - that means you were one of the unlucky people. My apologies! I'll start the purge on Friday."