Well, Starsky and burner, if you've got a physical address for him I'd start calling. Could be that he's had some kind of unforeseen problem -- only way to know is to contact him and ask. If he's not returning email or posts that only leaves the phone.
I don't show any J. Clocks in the metro ATL area -- but there are some other Clocks that come up. A street address would help nail that down, if that's even his name.