[Pateeffelty]

It's not a subject with which I'm particularly familiar, but are there "stories" to be found that relate specifically to communication with extra-terrestrials, or are you referring to more "traditional" powers such as those referenced in Element's sutta quote from page 1?

The latter -- from the Theravada tradition and, indeed, the Pali Canon. If one can accept siddhis as plausible, communication with starry visitors shouldn't be much of a stretch!

I see from your OP that you wanted to discuss the particular example from Tibet, but it's a bit hard to avoid the larger issue at stake -- namely, "what should I, the sincere but modern-minded Buddhist, do when I encounter teachings that seem impossible to believe?"