I'm pulling for the nem, but I really think that it may come back. As stated in a previous post, they come back from incredible amounts of stress.
My RBT was a split when I got it (so I guess my story is slightly different here), and it literally for about a week, would inflate and deflate. I didn't think that it would make it for sure. I was told that I should just sit back and leave it alone. Sure enough, it came back. It wandered and moved a bit, but swear to goodness, the thing has doubled in size in just 4 months!!!
Keep us posted!