I recently terminated a set of 2.5 year old twins and believe me I feel for everything you are saying in how drained you are. Its exhausting for sure. If its anything like my situation (and it sounds very much like what i went through with the behaviours and destruction) your daycare will totally change once they are gone. Mine is like a whole new group of kids and I don't crawl into bed at 6:30pm three days a week now that they are gone It was my first termination and was sooo hard, but sooo worth it in the end. You need to do it for yourself and the other children who are probably being affected by his behaviours too...and before the rest of your group starts following suit with him! Good luck!