This is the best part of your note and the part where I can say been there done that: I noticed this and asked if he had changed his mind and he said yes. That it didn't matter what he thought - he knew I would make him go and they would believe everything I said and nothing he said.
So I called and cancelled the police and took him there.
Best of luck with-his treatment in psychiatric hospital. I hope they can figure out what's going on. {{hugs}}