Let it do whatever it wants. you're lucky that yours looks like that if you just got it. My GBTA looked HORRIBLE the first week I got it because of the acclimation process. It was a big ball of foot it looked like. I could barely see any of the tentacles. They move until they find a spot that THEY like, not a spot that you like. More often than not, it will go to the place that you do not want it to go. Just the luck of the draw. I got mine about 2 weeks ago and it just started looking normal this weekend. Give it time to get used to the tank and make sure your powerheads are covered because if it is floating around and gets caught in one, it could turn into a mess. Be prepared to move corals away from it too. Welcome to the world of anemones. Your rose is beautiful.
-Az