iPod Classic: lost headphone ribbon cable clamp

I was just replacing the battery in my iPod classic and I pulled on the case just a touch too hard. The ribbon cable that controls the Headphone Jack and Hold Switch came loose from the motherboard. No big deal.

But when I tried to flip open the lock on the cable bracket/connector, the lock flew off the unit and into nowheresville. I can't find it anywhere. There is no damage to the actual cable connector, except that it is now missing the lock to press the cable securely.

Is there a replacement (without getting a new motherboard) for this fiddly little clamp? Or a reliable way to fabricate a replacement without fear that I'll have to keep opening the case to play with the connection?

Thanks!