I also use the light grid. as soon as mine pip, I take all the eggs off the grid and place them on a wet paper towel. if one comes out of the egg before it's suppose to and the cord is still attach. less chance of ripping it on the ruff grid, until I see that I have this issue and able to place that one in a deli cup.
I keep mine in the incubator until they come out of the egg.