HELP! A pipe broke last night and my 20x40 IG vinyl pool lost about 5,000 gallons of water and the liner has floated big time. At first I thought the bottom collapsed in the shallow end as the floor was uneven by about a foot, but then I saw that it was the liner that was up by about a foot on the left half of the shallow end. In the deep end it appears to be away from the wall by almost three feet. I've started added in water, but am not sure what to do to reseat the liner correctly. Will adding water just push it back where it should be? There is both air and water behind it now. I have a sump under the deep end that I can pump the water out using the main pump. I am wondering if I should fill the pool totally before doing that, or only partly fill it and then pump the water out to suck the liner back down. Ideas please 