Me? I would be leery about that pool. It looks like your upright ahs disconnected from both the bottom track and the upper part of the wall, and the wall is starting to bulge.
If there is any sort of defect in your cove at that spot, the liner is going to go right out through the bottom. Or if there is any sort of defect in the wall to act as a stress riser, it could open right up.
You might be able to drain the pool a good portion, reattach the upright (provided nothing is rotted away) and then re-fill
-dave