Yup, move on. Into every single life some -hark - unplanned "episodes" will fall. You just need to dust yourself off and get back to the healthy eating. You haven't "ruined" anything or "blown anything". You haven't "screwed-up".
You don't have a diet to get back onto, because you're not on one. You're "on" a lifestyle. And slip-ups, mis-steps, blunders, blips, whatever the heck you want to call them ARE PART OF THE LIFESTLYE. They are PART OF THE JOURNEY. Therefore there is no reason to be angry with yourself
It took me a while to "get that".