I would if I were you. But it may just take a day or two on the 'diarrhea diet' before he's ready to have kibble added back in.Do I go back to where we started with no kibble just rice chicken pumpkin then transition back or just continue with where we left off?
My last GSD, Ferg, was like Chewie with his sensitive belly. For him, it wasn't only food indiscretions but also any stressful situations that brought out diarrhea in him, so it may not only have been the bite of burger for Chewie.
I know it's frustrating, but it may improve over time for Chewie. With Ferg, it was like his intestines remained slightly inflamed for awhile even during non-diarrhea times. Once we'd gone for a long enough stretch of time without the runs (I'm talking months here), he eventually did better. I still had to be really careful with his diet, stress, and heat exposure to avoid diarrhea.