In my day (20 years ago), if an applicant didn't have ECFMG cert, they were pulled from the Match. That's it. No appeal, no workaround, no short cuts. It's a check box, and, if not checked, you're out. Full stop. You can interview, but, if they ask if you will have your cert, and you don't think you will, but tell them you will, you better hope they don't find out.