I don't think it was Tad.
Since I was there, and I sail a spin boat, and it is yellow, and it's a N20, and I recall a similar incident at the C mark, I'll assume it was me. So much for anonymous. . .

First off to Dan. I would never maliciously attempt a maneuver as you describe. There was no danger and that is really painting a picture with a broad stroke. I saw it from a much better and different perspective, the drawing was not accurate, and other boats were in play. All the same, my apologies to you since you feel offended, and if perception allows it to be perceived as not a good move, so be it. I'm am sorry. So here's my take:

It was light winds and SLOW. I had a very clear view of how this situation was playing out and the boat speeds of all involved. Both port A's were concentrating on mark rounding.

I was NOT reaching into the mark at 90 degrees to the wind, but was sailing downwind with a layline to the far (right downwind) gate.

I was sailing between two port tack A-cats. Jack Young(A-cat) was my leeward on port and Dan was my windward on port (A-cat). A fourth boat Trey (N20} coming into the far right gate on port and ahead of me.

Dan was further back to the mark than how I perceive the drawing and was slowing in his speed. Jack was just about to approach/begin his rounding.

What Dan partially heard me hail was ("I'm sailing to the far mark"). I announce my intentions to him.

Dan, assumptions aside, the only way I could have possibly gibed to the left mark, I would STILL have to sail past you as that was the only way I would have made the left mark.

Perception of what happened between us is obviously different. Perceive it a shitty move within my rights, and with that I apologize, as it was not my intention.