when u go in just do not burn the bridge like i would

stay polite and nice ........as for what ppl say ......u have no control over that ppl will make up something if it is juicy enough it will pass around .......your best bet is to make a statement in public telling them what and why so they know the reasons after that it is no longer your problem it is theirs

good luck ...........and rem pulling the fire alarm is a crime ......so is dumping a pot of coffee on the bosses computer