wtf thats a new one! lol
Looks like it didn't solder on properly during manufacture, but held on well enough I didn't notice during quality checks.
Anyway, this is an easy repair. Set your soldering iron to max, and use tweezers to hold the USB connector in place. Push it down as the solder melts. Its a 5 minute job, really. Just make sure the 5 pins aren't shorted when you solder them back on.