It was a strange situation. Despite having been at the helm for the team in all seven events on the SailGP season two calendar and being a factor in the team sitting fourth on the ladder with the prospect of leaving San Francisco with the US$1 million ($1.436m) prize, Robertson's services were not wanted.
Even in training in the lead up to the race, he had next to no time to prepare.
"They actually wouldn't let me train," he explained. "They had their season three team on the boat and wouldn't let me train. I showed up a couple of days before the event, they gave me an hour of training and I said 'look, it's not really good enough for an athlete to be not allowed to train by his own team.'
"I actually gave them an ultimatum. I said 'you've got to give me at least the next two days, all the training time, or I actually don't think it's worth me being on the boat.' They slept on it, came back the next morning and said they'd go with the Spanish driver.
"I was actually quite relieved, but a little bit disappointed with the comments that came out from the team afterwards."
At the season two finale, the Spanish team did not end up qualifying for the $1million race. In the fourth fleet race of the event, they crashed with the American boat after trying to undercut them around a gate and sustained season-ending damage. Robertson watched on as a spectator.
"It's a good team," he said of the Spanish outfit. "We got it to a very high level. I think for anyone to come on and drive the boat was in a fairly easy position and they obviously had a big crash which I think just goes to show the inexperience in a situation like that when it's tight and not really knowing what to do. I wasn't surprised."
With that situation now behind him, Robertson was looking forward to beginning the new season the Canadian team. Having known his time with the Spanish outfit was probably going to be fleeting, he kept himself abreast of other opportunities and now finds himself as a pivotal part of one of the two new teams in the competition.
Canada and Switzerland will make it a 10-team fleet this season, as they line up against New Zealand, Australian, Great Britain, USA, Spain, Denmark, Japan and France.
While this will be Robertson's third team in as many seasons, he intends to be a long-term member of the Canadian team as they look to build themselves into a contenting outfit.
"It would be nice to be able to build a team and stick with it as well. A team wants to be together for as long as possible and they only get stronger," he said.
"We know our back is against the wall, and we've got a lot of hard work to do firstly just to catch up to the level of these teams, and then try to outsmart them at some point and do stuff better.
"It's going to be a hard road, but I'm a bit of a work horse and don't mind having to fight for it – and we're going to be fighting bloody hard."