Although I am not the world's expert on nutrition, the hardest thing about a plateau is pushing through. If I were you, on the other hand, that 35 pounds would be a big incentive to keep doing what worked. Remember (as if any of us needs this reminder) that the easiest way to eat healthy consistently is to be as consistent as you can in eating healthy. It seems to me, that is, that even when our goal is 80/20, doing the "20" in little bits each day is more injurious to our mind-set and cravings than falling completely off the wagon once every 2 weeks and then behaving pretty much the rest of the time.
Stay focused on the long haul and you'll do great. Thanks for sharing.