I nor Android.net take any responsibility for anything that might go wrong using this method.
This is an automated script for Linux and OSX with Windows support coming soon. I extracted the PurpleDrake Tar Image and used adb to root my G3. The recovery images are in the Tar and you use Flashify from the market to flash the TWRP recovery. The main reason I rooted was to get rid of the system bloat.
If you're not familiar with adb you might wait for the windows script.
[ROOT / TWRP][D851 ONLY] Root/TWRP your TMO … | LG G3 | XDA Forum