yes, one of the most tell-tale symptoms of hypothermia (and at the most critical time) is the sudden feeling of being hot. your body and mind are too confused at this time and many victims of hypothermia have been found lying in odd places (like on top of snow) in nothing but their skivvies.

I hadn't thought about hypothermia until your comment, but now it makes a lot of since. I guess we'll only know for sure once the police report comes out.