Reigning WorldSSP king Randy Krummenacher has spit with the MV Agusta team before the grid reconvenes at Jerez.
The Swiss has fired accusations of 'serious breaches on the part of the company that compromise both the rider‘s performance as well as his professionalism, reputation and personal integrity'.
"This is not a pleasant situation and I never wanted any of this. The aim was to fight for the world title once more but unfortunately, the foundations needed to move ahead with the project with MV Agusta Reparto Corse are not there," said Krummenacher.
"I have had to take this decision in order to preserve my moral and professional integrity, as well as my safety. Throughout my career, I have always tried to do the right thing, giving it my all in any situation, even the most challenging. But this time there was only one decision I could make.
"I cannot say more about my motives at this time, but further details will be communicated in due course."