Sounds unusual, but not beyond the realm of possibilities. Do you distrust what your friend is telling you or are you just surprised that perhaps the jail wasn't taking people today? What is your stake in this situation?
San Diego Criminal Defense Attorney--19 years experience. Law Offices of Jay S. Finnecy
Seems odd, but I guess it's possible. I've never heard of someone being turned away from a surrender date, myself.
Keep in mind that it's not uncommon for defendants and onlookers to misunderstand or misinterpret the goings on in criminal court. So that's a possibility, too.
Any statements I make in these forums (fora?) should not be taken as direct legal advice, merely informed guidance. This is true due to the anonymous nature of this venue, and the incomplete information which is invariably provided by the questions. It is imperative that you consult directly with an attorney regarding your specific situation before acting on or relying on anything represented here. Period.
It seems likely to me that he was supposed to turn himself into the county jail, NOT the courthouse. When he went to court the clerk probably assumed he wanted to request a modification of his sentence and two weeks was the earliest they could schedule him.