Unmelding is considered unsportsmanlike and is therefore prohibited on the last hand to insure your team a win.

If a team unmelds on the last hand of a game, to win the team game, they forfeit the win, and must report the loss immediately.

Explanation: Unmelding is defined as a player eliminating the blue line over a meld or reclicking to undo the meld effectively creating deadwood to go out within their partners spread or cushioned points to win the overall team game.