We have installed a 15 x30 above ground pool, and while filling it the metal walls have bulged out of the tracks in some areas. What can/needs to be done? We've had a ton of rain so the ground is very wet and seems to be just giving way underneath, thanks for any help!!

You must drain all of that water and go back under the liner to see what you did wrong. The vertical wall supports should have kept the top and bottom rails together enough so this could not happen. Somewhere your top or botton rail is not properly attached