Tomgil,
Like Scott stated the controller probably didn't mean to say what he said over the radio, plus he doesn't have the authority to tell you to park it and go home, even though at times we may wish that we had the authority.
The important key is to never assume, when in doubt always ask questions. I've heard rumors that the FAA would like to do away with taxi into position and hold clearances.
Like someone suggested fill out a NASA ASRS form and mail it in, in fact every pilot should have several blank forms in their flight bags just in case something occurs.
Mike