Well, I guess I'm not that worried about the liner at this point as I'm sure it's shot. I've heard it's dangerous to leave a vinyl pool empty due to damage that may occur to the walls. Maybe I'm misinformed.

I'm just curious as to what could have happened over the winter to an area that deep in the pool. I've probably only got about 3 feet of water left in the deep end, so that doesn't leave a lot of area left to be the cause of the problem. I'm really concerned about the drain and wondered if it's at all possible that it could have been forced out the waste line.