No!! Don't leave it. I use to have two 50gal rubbermaid storage bins in my basement, half full. They bowed out and I left them and then they broke at the bottom and leaked. Luckily I caught it quickly but this could have been pretty bad if I hadn't. Build a wooden frame around it or simply get one of those fabric ropes with the metal tightening latch. The kind they use to tighten boats onto trailors when traveling. I don't know the name of them.
