Hey Kangaroomama ~ seems a lot wanted to view but not give us any advice.
I think it's just part of the toddler phase and after meeting with the parents tonight, it seemed they weren't doing their part at home. He was getting mixed messages from us. OK at home but not at daycare. I'm really lucky to have these parents and were really receptive to talking things out and we chatted about both of us doing the same thing to give him the right message.
Chat with your daycare parents and see if they are on board with what your doing at your daycare. I think once we get the parents on board and we are all doing the same thing- it may take some time but the behavior will change.
Good luck!!