Temporary greens, marked with a continuous white line, are currently established on the course for winter conditions. When NOT in play, these temporary greens are to be treated as GUR and relief MUST be taken. There are no exceptions including the use of the putter! The penalty for playing from GUR is 2 strokes. The player MUST lift the ball and drop it without penalty within one club-length of and not nearer the hole than the nearest point of relief. The ball may be cleaned when lifted under this rule.
Conversely, if any of these temporary greens are in play then the main green of the hole in question is out of play and is deemed a Wrong Putting Green and relief MUST be taken as above, and again you must not put off this wrong green. We’re trying to protect the course – It’s all common sense!!