As others unfortunately found out, Dvor will (and ‘can’) not delete your account. See e.g.: http://www.ripoffreport.com/r/dvor/northbrook-illinois-60062/dvor-dvorcom-holds-hostage-private-consumer-data-by-refusing-to-delete-account-northbro-843094
So the best would be to request deletion after all (perhaps they’ll implement it after all), using the webform at http://www.dvor.com/contact-member.html . Otherwise our general anonymisation tips could be tried.