best way to decrypt a tmobile phone running pure rom

so, just got my nexus a couple of days ago, and loving it!
would like to decrypt, but not 100% sure on the best/safest way to do it at this point..
running pure rom, with lots of tweaks, and I originally unlocked and rooted with Wugs great toolkit.

I know if I decrypt at this point I will lose all my data and stuff, but of course its already backed up in a couple of places, and I have the "fixes" to flash after I decrypt to keep me that way, if I flash a "encrypted" rom by mistake.

Just wondering if someone could make a straightforward post, telling me the 3 or 4 things I need to do/flash to get to that point.

Thanks so much!:good: