I did another backup (one computer, one device) and unrooted, installed my apps and did some configuring.
The above linked method was applied and the device froze on first boot at a blank/black screen.
I waited three minutes with no change, pulled the battery and replaced it, hit the power button and nothing.
The device sat dead for a few minutes while I thought about my options, mostly involving my 16 pound sledge hammer.
I hit the power button again as I got up to head out to the garage and it powered up into my default, unrooted, stock setup.
I rooted the old way.
I then restored my rooted backup from my computer and I'm happy again.
I do not recommend this method for the Fascinate (there are already nine Android devices on the list of those which this method may not work).
YMMV.