Nothing worked! I used Oxi-clean and even scrubbed a bit, then let it sit for a while prior to washing. There is an orange tint and I'm scared to death to bleach it!!!
Right now, it is sitting on the side of the washing machine resprayed, soaking up more Oxi. It's all ready to be bound. I zig-zagged the edges together prior to washing to keep the parts together. At least THAT held up just fine!