Now, I am waiting, for what I do not know. See below for
Update: 2:46 PM - A nice tech named Megan came up and logged in with her ID and removed the hold. Now, when I try to add a class, I just get a SQL database error instead! Oh joy, oh rapture, oh bliss! They called the same tech back, so we'll see what happens next!
Update: 3:35 PM - - Basically, the registrar screwed up. But we're OK now; I think I got the classes I need.