Re: Close call! Who had rights?
If the sails are down and you aren't anchored or showing a day shape for anchored you are a motor boat.
The description is not clear enough, he was motoring, sideways in front of you and you were drifting - it appears to me that you were passing side to side and 'something' closed the gap.
That would be you, you, and you - unless he made a turn to cross in front.
In any case, you opted to not be able to control your boat in a potentially crowded sea way.
I've observed many races including Volvo's and the local stuff. The Volvo races had (according to the media) 1000+ boats. Drifting is not an option.
Lessons learned are opportunities earned.