Uh-oh, it sounds like the fall damaged the USB connection. I'm not sure from your explanation whether the center ribbon cable needed replacement, but obviously it didn't solve the problem.
As you've surely also realized, the fact that the right half gets hot indicates a short circuit. I am afraid that it might be damaged beyond repair, especially because all we regular users can do is to replace the simple parts (cables) but we can't really diagnose or fix damaged electronic components.
My advice would be to carefully open the right half and then first check for any obvious damage near the USB cable, but then also trace the PCB lines to the next few components to find out what parts got hot -- there is sure to be some miscoloring there. If you're lucky, there might be some replaceable components, although you'll need to be very handy with solder (or find someone who is).
If you're unlucky, the short-circuit has fried some FingerWorks-specific component(s) that can't be replaced. If that's the case, try to find a "new" right half (because someone might sell a unit where the left half is bad but the right is still OK). Otherwise your best solution is to offer the left half as a spare to someone else... painful, I know.
I'm sorry I can't offer deeply detailed steps to all of the above -- I'm just a regular user, plus the janitor around here (thanks for your praise!). Use the search; there have been some posts about dismantling the device with minimal damage to the plastic casing.
TorbenGB - webmaster & forum admin