I have enjoyed a great summer using our 24' AG Pool. Been using the Trouble Free method of cleaning and water balance. Also went to a SWC generator two years ago. However I have closed the pool for the winter. Lowered the water level, put pillow in center and covered with winter cover. Everything fine until today. I have lost all my water in the last two days. Just pulled back the cover and found the liner torn/separated 2/3 of the way around the pool and laying in the bottom. All the water is gone. What choices do I have now to fix the problem. It is currently 26 degrees outside. Has anyone else ever run into this problem. Liner is/was 5 years old. Thanks in advance for any and all help.