Yeah, I thought it might be that he has a counterpressure filler and BeerGun in the cellar. Besides, like you said, there should be seriously little 02 contact since the cane goes to the bottom and the co2 would blanket the top of the beer as it rises.
Thanks BM, I'm getting parts for a BMBF today. One question I couldn't answer after looking through 80% of the thread... a homebrew buddy (who has a Beer Gun I have borrowed) is convinced that there will be oxidation without purging the bottle with CO2 and has suggested that folks in this...