After winning the title, Jenson made the much-publicised switch to McLaren and did this to prove his critics wrong, Ross believes.
Button justified that change as being one to seek
more money a new challenge in 2010 as team-mate to Lewis Hamilton at McLaren – an explanation that was not believed in some circles.
Some sceptics believe that, at the time that Jenson was making his decision, Nico Rosberg was already under contract to Brawn – later to become Mercedes GP – for 2010, and rumours were mounting that Michael Schumacher was also planning his own comeback to F1 with the Silver Arrows.
The sceptics believe that Jenson’s “new challenge” was simply a ruse for the Brawn team effectively kicking him to the kerb.
However, Brawn has since clarified the matter, expressing he “was disappointed Jenson left.”
Speaking with The Sun, Brawn added: "He felt people were of the opinion he only won the world championship because he had the best car. So he left us to show them he could do it again elsewhere.
"He also wanted to prove himself at McLaren against the guy who is probably the fastest and most naturally talented in motor racing – Lewis Hamilton.
"He’s set himself a massive challenge and he is doing very well so far."
Despite some criticism from Brawn and Mercedes GP CEO Nick Fry at the time of Button’s announced signing with McLaren, Brawn insists that he and Button remain good friends.
"We are still friends. We were on the same flight back from Malaysia and we had a good chat,” Ross said. "Jenson was a fabulous member of our team last year but now he is the history and we have to beat him.”
[Original image via The Cahier Archive]