Gail, if it's any consolation I did exactly the same with my first 2 cutting boards. The only thing I can suggest is that you put it on top of your tumble dryer (if you have one) place the heaviest weights you can on top (I used lots and lots of heavy books) and leave it there for several days while you run clothes through the tumbler. It should get most of the kinks out of it but it will never be perfect again. Some people also suggested cutting it down to a size that doesn't have any kinks.

Sorry it's doomed. I lost one in a class when someone turned a heater on

Several months ago I purchased my first cutting board. I had a small space to work in so covered the mat with a double thick towel while ironing. My mat now has moguls on the end. Any suggestions on how to flatten it out other than buying a new one. Gail