I don't think corn is catastrophic in Phase 1, but I am one of those who believes a totally clean 2 weeks is key to success. It also just makes everything after much easier, for me easier than I ever imagined it could be. I would experiment with the recipe once you're settled in Phase 2 though, since it's such a small amount of corn per serving.
Baby steps, losing the holiday excess first.
Maintaining 48 lb loss since 2008, working off regain to a sensible maintenance level. 60+ lbs and counting!