Hi alligator1. I guess I'm having some problems similar to yours. I means, worse than yours !
7.2 was working perfectly, installed it as soon as I got the tablet out of the box, that is 2 weeks ago.
I had not been using it for a few days and this evening, I was browsing the Android market when suddenly, the touch screen stopped working. I figured it was just a temporary bug and I tried to reset the device. I hard to hard reset since the touch screen wasn't working. But that was the beginning of the end...
After the reboot, I could not unlock the screen anymore, the input still wasn't working.
Tried to flash again with 7.2. After booting, I'm prompted with the "Superuser request" popup, but of course, I cannot select "accept" or "deny".
However, the status bar accepts inputs ! The back button, the hide status bar button or usb icon can be clicked and the events are registered. Except, the rest of the screen is not working anymore.
So I'm fkin stucked, unable to flash with the original ROM. When I try to enter recovery mode (back and power button pressing), nothing happens. And whether the device is on or off, when I try to execute the original ROM .exe file, I get the message "USB device not found"...
By the way, great job you did here [Legionnaire]