Well, that is not very sportsmanlike by Ian. I would like to know on what info he based that claim and seems to be pissing on Akzo's parade.
I have the TBRU 24/05/18 00 UTC and 19 UTC positions plotted with the currents modeled at 24/05/18 00 UTC and 25/05/18 00 UTC. I know the timing is off, but my point is that the global NE course followed by AKZO and TBRU and the projected meandering GS (green stuff) look not very much aligned. There could have been parts where the current was with them, but also against them. Probably both. We simply don't know if the current played a major role or not at all, only RC and the boats themselves have the data to assess that.