Liner is completely out.. what a mess! (mostly my fault because it was swamp water haha)

One small hole in the hopper's poolcrete and a little stream of water from underneath is constantly flowing back in. It's been doing it for hours now. Once it gets to be a couple inches deep i sump pump it out again. Any ideas? I sure hope it stops soon! I have people lined up to help Sunday morning with the new one.

Pretty sure I have everything I need. New gaskets for the bottom return and skimmers. Salt. CYA. Bleach.