"When Kenny lost the AMA outdoor title to an amazingly strong Eli Tomac a lot was going on in his head. He was unhappy with the world, unhappy with the team, the bike and himself.
"I think the Nations was the turning point again as he rode such a strong race, and when I saw him last week at the Monster Cup in Vegas he was happy again. He has seen his potential on the 450 and seen that he is not missing much to be a front runner. With this is mind he has decided to uproot house in California and move to Florida whewre he can work with Aldon Baker, the trainer who took Ricky Carmichael and Ryan Villopoto to the very top.
"He has also signed up with the Wasserman management group and it is clear that other teams are interested in him, but Ken has a contract with KTM until the end of 2014 and is currently training on the KTM which we have shipped out to Florida for him.
"It's a pity that he will not be able to race Genova and Bercy, but with the change of class, move to Florida and his link to Aldon he has to set priorities, and he has recognised that his main priority is to be ready for A1 in January."
Both promotors have reacted immediately to Roczen's withdrawal by signing up East coast champion Wil Hahn while Bercy also add Star Yamaha's 16 year old sensation Cooper Webb to race the French classic alongside Justin Barcia, Trey Canard, Andrew Short und home hotshots Gautier Paulin, Jordi Tixier, Valentin Teillet, Greg Aranda and Cedric Soubeyras.