Stuck on "Clearing EXT4 *DATA* partition"

So I was attempting to flash this ROM for the first time http://forum.xda-developers.com/show....php?t=1762846 and the instructions recommended using this Super_Wipe_Galaxy.zip file which I did through CWM. It went through the process and stopped on Step 4, "Clearing EXT4 *DATA* partition". It's been sitting there a good hour now. What are my options? I'm assuming it really shouldn't take this long. Normally, I wipe data the old fashioned way. This is the first time something like this has ever happened to me. I have nandroid back-ups if needed. Can I just pull the battery and restore a Nandroid? Trying to remain calm..

Pulling the battery and going to recovery solved the problem.