No, but wow, poor guy. Sounds to me like he was pretty devastated losing his "position".
If he stayed still and didn't make the efforts to keep his body heat up, I can see it happening.
Hope he will be ok.
Glad my idea, doesn't sound too far fetched. Only thing I could think of. He was okay yesterday, hopefully the same today, I am going to go outside in a little bit. It definately is strange.