I think he may have been extra restless because he was hot. Our house is 77 degrees and his hair was matted to his head from sweat. He's a little furnace like his dad, so maybe he was just uncomfortable. I lasted a few minutes, but gave him back the MiMi. He still wouldn't chill and started crying again. I turned on the air and laid with him until he was snoring.
The crib is out -- he climbed out of it several times. I think he's just testing his boundaries. He slept fabulously in his bed from August until a couple weeks ago. He'd lay right down at 7:30pm and be out until 7:30 or 8 the next morning without a peep and wouldn't get out until one of us came to get him.
I realize now taking the MiMi isn't a real logical consequence, but the threat worked so well...until tonight. And then I felt I had to follow through. Hopefully tomorrow night goes better.
Re: I couldn't do it -- he's peacefully sleeping, sucking on his MiMi.