When I'm able, I'll pass more info. But the basic error was just that 5012 communication error and Fedora popped up a message window indicating the Printer might not be connected. The print jobs just sat in the queue, nothing ever got printed.
But the Photosmart C7280 has the ability to be configured as a stand alone network printer. In this mode, printing seems to be working fine. Also, scanning is still working over the USB.
But USB printing is still broken.