Aylestone St James rugby club have been fined £1575 after three officials complained they had their underwear "forcibly removed" after a match in November.
The incident occurred after Aylestone St James' game against Grimsby in the club house when players targeted the officials as they were not adhering to the club's tradition that patrons should not wear underwear.
The lengthy RFU judgement says three officials had their "underwear/boxer shorts ripped off whilst they were wearing their trousers".
One official claimed "he endured some 12 hours of some discomfort and pain and some shock". The club said they were "very sorry".