toadstool leather flopping over?

i have a new, relatively large, 4-5 inches across, toadsool leater. it has been opening up very nicely. it has already gone through a shedding stage cuz it stayed closed for a day or two. a couple days ago i moved it from the side of the tank to the middle where there was better current cuz detrius was settling on the crown. it opend right up that day but the nex 2 day, up until now, it is slouched over all the way down to the base like a "U". is this ok? the crown is still opening up, it still looks nice but it is not standing up anymore? do they do this sometimes? like move around and stuff?