Well, here's my decision.
He's sleeping soundly after a hard, hard day.
I just couldn't take it away from him that way. The poor thing really seemed very traumatized by it all.
After church I made his sister explain what had happened and made her apologize for not being honest about the mi-mi. She felt pretty badly, I think.
Anyway, my sweet little Monkey was thrilled to see his mi-mi and probably could have floated all the way up to his bed!
We'll deal with how to get rid of it in the next couple of months- hopefully in a less traumatizing way! I'll keep you posted!
Thanks to everyone for the encouraging emails and suggestions! I really appreciate your help!