You could always try to save it with fabric stiffener. It'll help your petticoat maintain its shape.
I made my petticoat with this really really thick and stiff netting. I have no idea what it's called. I got it at Wal-mart though. The holes are about as small as tulle, but a 1000 times stiffer than net. Here is a picture of it, under my Chii outfit: