Ok first, go to your add remove programs list and remove the background4allpages thing. Then download the diamond TF3D config and goto appearance > restore default. This will delete all your manila files which will make the phone restore the defaults on it's next startup.
Now, go to this thread:
http://forum.ppcgeeks.com/showthread.php?t=44689
At the third post you'll see some files. Unfortunately there's nothing with a stock sprint clock, but
Backgrounds+FlipClock (Glass).zip looks great with a nice wallpaper.
The zip contains a bunch of manila files. All you have to do is copy them to your storage card, then open up total commander, and navigate to the files. Select them all then hold down the stylus on one file and select "Copy". Then select tree, find your Windows directory, then hit ok. Then restart your phone and you'll have every slide transparent.
If you ever want to revert back to stock, you can just use the diamond TF3D Config tool to restore the stock manila files.