9. If a kubb is struck and, without ever becoming parallel to the ground, comes to rest leaning on a game component, the attacking team may ask to temporarily halt play. The defending team is to move the supporting piece(s) a minimum amount required to determine if the leaning piece will fall, without touching the kubb in question. Once a determination has been made, pieces are to be set back as close to their original positions as possible. If a piece will fall, it is considered toppled the remainder of the phase.
Thanks for the question Threepeaks. This is from page six of the US Championship Rules. www.usakubb.org
. Note that the field marking stakes are game components.