you can try Flashing cwm then download this zip, put it to SDcard then flash via CWM. I have not tried this step before so you're on your own here.
Alternatively, flash ardatdat's Kernel. It will give you root without flashing a ROM. Again, I have not tested, but others confirmed that this worked for them.
If you don't want OC you can Odin flash uknatos' kernel.
BUT with ardatdat's Kernel worked flawlessly. Thank you! And due to having CWM before attempting ANYTHING, i was able to do a nandroid backup. (So now I have my own non touched ATT rom)
This thread should be pinned on development, AND included as the first step of rooting the Glide.... Would avoid many, many bricks...