Nico Lee has been suspended for 13 weeks after he was alleged to have cleared the contents of his nose onto a player during the match against Connacht.
The panel decided to hand him the maximum punishment, this means Lee will not be playing part in the rest of the campaign.
The disciplinary committee found there is no place in the game for this kind of behaviour.
“This is not a case of over-exuberance, or an act which is within the rules of the game going awry. It follows that by its nature this act is one that is deserving of punishment. It is contrary to the spirit of sport.
“The effect on the victim player was understandably serious. There is no expectation, and there ought never be an expectation, that an opposing player would clear the contents of their nose onto an opponent.
“It is difficult to imagine how an act of foul play of this sort could be worse, save for repeated acts or where actual injury is caused.”