Unless they signed a confidentiality agreement, they were not actually required to keep it confidential--certainly, you could ask them to, and it would be much more professional to have kept your confidence, but in the absence of a written agreement to maintain confidentiality, there is no legal requirement to keep the reasons for a suspension confidential.If someone is making untrue factual statements about you--e.g. telling people that you are addicted to cocaine, when you are not--that may be defamation and you may be able to sue that person for his or her statements. If you wish to explore this option, consult with a personal injury attorney about whether you have a case, how strong it might be, and what it might be worth (and what it would cost to pursue it).