I had almost the exact scenario happen to me except it was the return line that blew off and the large volume and pressure of the water shooting at the side of the pool dug a big hole of dirt out from under the pool. I tried to fill it back in, but without draining the pool I could not fill the divot back in. Luckily it looks like the liner stretched and now I have a 3-4 inch deep pit about 3 feet long and 1 foot wide at its widest point at one edge of my pool. I was able to build the support back up at the rail and the liner seems to be holding so I am not worried about it. The hoses that I was using are the ones supplied and recommended by the pump manufacture and were included with the pump/filter package. During this I noticed that the return hose would stretch about a foot and the suction hose would shrink about the same when the pump was turned on, so I decided that this hose, even though supplied by the manufacture, was not a good thing and would continue to cause problem. Ultimately I just hard plumbed with PVC using unions and ball valves on each end so that in about 2 minutes I can disconnect everything and put it away for winter. Now I don’t have to worry about cheap hoses or unreliable hose clamps.