I agree with the first few responses that is "resume normal speed" is jus that, resume the speed you would be required to fly before ATC intervened. In a perfect world the pilot should then still adhere to the 250kt STAR speed restriction. The one I have heard used that I have a problem with is guys that say "resume desired speed" cos that one sounds to me like fly what speed you want till touch down, disregarding any speed restrictions.