OP directions worked for me, no issues. Came from stock .596 rooted and deodexed. I did NOT unfreeze any apps or bloatware with TiBU.
I read Tadpoles instructions on mydroidworld for this which have a different battery pull point and I was a bit confused when to pull the battery. So what I did was take the OTA update and after the update screen finished (little droid guy hopping out of the box) and the phone was rebooting, I pulled the battery when the droid eye came up. This got me to CWR and I installed the su zip and then rebooted. Now rooted with .602 and 13p!