either the story was fabricated or the hisotechs in that lab need a lession in professionalism. the patients would have been poorly served by the histo techs by not at least offering to help. don't you think? could you walk by someone coveslipping the wrong side of a slide and not correcthem requardless of who they are?  besides it is almost impossible to cover slip the wrong side without noticing it. 
the purpose for such a story is of course boss bashing. we have all done it at work, i have never and never would do it in such a public manner.
john