I've heard tell that if you break open a developing egg, often times you can still see it moving/heart beating for a few minutes afterwards. Everything I've broken open has been very, very dead so I don't know first hand. It definitely sounds like it had started to develop anyway...
If you can see veining, it's a good sign on development. It'll definitely be slower, since the temp is a bit low. I'm guessing it'll be a good 2 days slower.
If you post a picture of the candling, we can give our opinion.
There was a lady who tried this (NurseTurtle, I believe). She did it for a week or so, and then stuck it in the incubator. The egg ended up dying a few days later.
My concerns are the following: Human body temp is only 98.6 on average, and that's INSIDE the mouth. I'm guessing that between the...