I could not install the latest Verizon OTA update that was released on October 29th. It kept failing. A Google Search revealed it was because I had rooted my phone in a particular manner. I found your tutorial on how to unroot, and let me just say, Thank you VERY much for this guide. It worked great on a Verizon VS985.
The one and only thing that was different for me was I had to download the LG Mobile Driver for Verizon specifically to get my phone to show up under COM/PORT in the Device Manager. That file is named LG_VZW_UnitedWHQL_v2.18.0 as of October 31st, Halloween. The version number may change as time goes on.
Thanks again. I am back to a non rooted phone, I can grab OTA's, and hopefully it also means I am ready for Lollipop!