ERC had earlier published full details of a previous hearing into the fake blood substitution that saw Nick Evans return to the field of play illegally during Quins' Heineken Cup quarter-final defeat to Leinster at The Stoop last April.
Those publications saw European club rugby's governing body lay the blame for the subsequent cover up of the incident at the feet of former Quins director of rugby Dean Richards.
And while Richards, who resigned from his post last month, still faces a three-year-ban from the sport, ERC have stated that they will not be enforcing any further punishment against the club as a whole.
Having made it clear that they believe Quins' chief executive Mark Evans and other members of the club's hierarchy were not aware of what had happened against the eventual Heineken Cup winners until Richards' handed in his resignation, ERC have opted against demoting the team to this season's European Challenge Cup. They have instead decided that the heavy fine already imposed is sufficient punishment.
As for Ex-England No8 Richards was found to have been in total control of false statements given in the aftermath of the incident, with ERC giving a no-holds-barred assessment of his role one of rugby's most embarrassing episodes.
"Mr Richards was the directing mind and had central control over everything that happened in relation to the fabrication of the blood injury on the pitch, and the cover-up in the days after the match," the ERC document read.
"It was Mr Richards who had instigated and directed arrangements which enabled the fabrication of blood injuries as and when that was convenient and would assist the club during matches.
"In one of the highest-profile matches in which the club had ever been involved, he was prepared to try to cheat Leinster out of a victory by bringing on a player at a crucial stage in the match when that player was not entitled to return to the field of play.
"He was quite disinterested in the consideration that by acting the way he did the club which deserved to win the match might be deprived of its victory.
"His (Richards) was the dominant personality and influence on affairs."