I wonder sometimes if the devs are not coordinating and planning these leaks. Surely they are on XDA. From what I have experienced in the IT industry, it is always good to expand outside of internal testing and move into a phase of a larger audience by getting the product into the hands of a few customers. Analyze the results.. make necessary changes... then do a larger launch..
I've seen this happen multiple times while on XDA.. I feel pretty comfortable in saying that these are planned leaks, planned removals of the leaks, and they are currently analyzing the posts on XDA.. As a matter of fact, I bet the devs and management are fist pumping the fact that other roms aren't working on this baseband..
That is basically what I said before. They decide to do an initial release of so many thousand devices. As soon as that many have been updated the release is pulled until the fallout of the release can be evaulated. Normally they use TMO employees for that phase, but most of them have probably moved on to newer devices by now. This happens almost every time with every LG rom release.