If any person makes affidavit to facts to authorize the coroner to disinter a body or the coroner does so of his own motion and such affidavit is made or disinterment carried out without good grounds or from malice or mischief, the person so swearing or the coroner so officiating shall be guilty of a misdemeanor. In such cases, all circumstances shall be considered by the coroner's jury; and, if it believes there were reasonable grounds for the disinterment at the time it took place, it shall be its duty to acquit.