And they told you what to do with it. Put it back! Unfortunately, it has not adhered to the other eggs, so as long as the male is in there to bother the female, it runs the risk of rolling away from the others again. The male has no instinct to protect or care for the eggs and has no business being in that cage. He could damage the eggs by slithering over them, knocking eggs loose from the nest, and stressing the mother out.
Hatch the eggs out if you want to, but with a set up like that and the male being housed with mother and eggs, you don't stand a good chance of them hatching. Now, we have answered your question about what to do with the egg. So go in there, put it back in the nest, come back to the computer, read the advice given by people who have years of experience and start fixing your other problems with the first being the male being in that cage.
By the way, that should have read pestering HER, not you.