Ouch! You have no idea how bad I feel for your situation right now, my best advice at this point in the game is to empty it and wait for a full sun day, you can hold the framework in place by tying it back from under the top rails (used wire bent into hooks to overhang wall) to stakes in the ground - like a tent.
I thought I had a pic of mine in that state on my PC, but after looking - I don't.
Mine stayed that way for 2 weeks waiting for the right warmer sunny day to install the liner - finally, I'd had enough and installed it on one of those grey spring days where it was threatening to rain, and I end up fnding out that my J hook liner is actually oversized - when we had it hung all around, I had almost a foot of material left over - now since we had tugged it as we hooked it on, we ended up untugging it all around and it ended up seating perfectly.
Yours needs full sun, if you put it in with full sun - likely a morning job, then let it hang until noon or 2 pm before adding water, it should stretch plenty for it all to come together.
Your wall looks ok, no real big creases. from what I can tell, it'll all work out just fine.