Yes, sometimes their eating instinct overwhelms all other considerations.
Sometimes Corns in captivity eat things which are too big for them - maybe moved up a size too soon. This tends to be followed by a regurge (if they manage to get it down without spitting it out and giving up).
I've seen a wildlife documentary where one of the larger constrictors in the wild was found to have eaten something so large that its skin actually split. It was expected to survive.