Although this trick is too late...
for the banned Bammer, somebody else might find it interesting.
Back in the '70s, we had a traveling reptile exhibit and often tried to exhibit a coral snake - very secretive creatures. We gave them a shallow layer of wood shavings, and left a piece of glass on top. They happily burrowed beneath the glass and seemed to feel secure in the tight space it provided, seemingly unaware that they were totally visible to all who came by. I never tried it on corns, since I don't care if they are hidden or not. But I bet it would also work with any small snake that liked to burrow.
Another way to accomplish the same thing is with the "Foam Home" being sold (not sure by whom). It creates a burrow next to the front or side glass of the cage, but allows you to view the animal while it is "hiding". We used them for our Cerastes vipers a few years ago. They would also probably work for most burrowing snakes or lizards.
There is often a way to satisfy both the human and pet needs - we just have to be smarter than our snakes, lol!