What's the mystery?I wouldn't say that what he did felt like a push or a shove, it felt more like an explosion. I would imagine that if he did the same thing with some momentum (as in a strike) that the effect would have been quite unpleasant (for me). Anyhow, I wonder if this LV kick isn't kind of like this guys "push". Using great body mechanics, he created an explosive impact with no wind up. But with the extra momentum it would be much more devastating.
Anyhow, if this has nothing to do with the LV-kick...
I think your right on (can`t be sure as haven`t experienced 'LV" kick)
Compression is a great deal of what I think you felt

That's what you get when you have body alignment and fajing...