Hands misboarded by persons unknown.
Normal Mitchell movement, players up + hands down. First 2 rounds hands played correct orientation third round onwards N/S hands have become E/W. Some players not available to ask when problem discovered. How should director rule? It is a normal club night and at both of the possible offending tables declarer had bid and made a grand slam not reached at any other table, hence where a score adjustment is made 1 pair will be punished severely [losing a top] whilst the other pair will be rewarded by removal of a bottom. Should the director hold off till discussed with all players and if not should he contact players to advise them of any penalty?