Bravo's Below Deck

That would not be an issue. With a vessel that large operating in british VI waters with an American film crew on board they absolutely would have filed location, transponder, full crew and guest manifest with the US coast guard.

The only reason they edited him out is to avoid a massive PR nightmare.
The tape exist(ed), so I doubt that "We didn't air any footage of him, so you can't make us testify" would fly.