Thanks Redranger209. Too late to kill the snake. I already relocated it, bulge in belly and all. So it is gone. I hope you are right about the eggs still being viable. I am trying to convince the hen to return to the nest but so far she is having none of it. These are peafowl eggs that I gave to the chicken hen who had gone broody two weeks ago. I might have to give them to another broody hen to hatch. Fingers crossed.
Cheer up. You'll likely get another chance to rescue a chick from your egg thief because the odds are really really high that your snake will return.
A hen who has been sitting for 36 days like your second sitting hen has been may give up in disgust before she finishes a 46 day tour of duty in the mother department. So don't be surprised if you have a total hatching failure.