Bug : can't aim the lamp at the lockpad

[Kreekakon]

As far as my experience goes, items in this engine which "glitch out" have a rather low chance of returning to their former state.

If you're feeling lucky you can try to yank the lamp back, and forth to see if you can get it normal again. Otherwise I'd recommend you load an earlier save, and take better care when interacting with the lamp this time.