Thank you, trapper. We've been putting sod under the West and softened the East with water (under the pool). As the West crept over the sod, the water slowly moved to the East. The water guy wanted to fill it, but I stopped him when the water level reached 2'4" - West, 2'4" - North, 2'2" - East and Yikes! 2'6" - South, especially when he asked if the pool was oval (because that's the shape it was taking).
Now we're waiting (hoping) the pool will level, but the oval shape is really bugging me. On the West and East the water is right on the inside bottom seam and the sides bulge out appropriately. On the South and North, the water has moved out the bottom of the pool 2 feet back, past the bottom seam and the walls stand 2 feet straight up. (It's a 4' high pool). The water measurement inside the pool, in the middle and all the way around is pretty level, 2'4". As the West is still creeping out, we keep adding sod (The liner has covered about 3' of extra sod already).
Is it safe to swim in the pool if we don't add any more water? Could it still collapse at this level? It's supposed to be 4' deep or 80% capacity, 3'2".
Next season, we're going to use sod and styrofoam insulation and level it first.