It's in preware and is called Remove Android and is in 'Available other' under 'Linux Application"
In my case 3.0.5 wouldn't update. I had Xron on mine. Re-installed CM7 then webOs would update.
I have seen a app in preware the at will remove android. Don't know how it workss but worth a try then run a doctor after that. There are forum posts of people doing it then having their TP fixed/replaced.
Hope it helps.
I have the Xron update as well. My TP won't update. It goes through the to reboot but after reboot it says update failed. I will try again in a couple days.