Oulton Park just posted the following about it on facebook
"For those due to attend the Easytrack day on Wednesday at Oulton Park, and who haven't already been contacted by the organisers, MSV understands that as of Thursday 11 April 2013, Easytrack has ceased to trade. Therefore regrettably all future events booked by Easytrack on MSV circuits have been cancelled. For more information please contact Easytrack directly on 01223 969 996."
So did Snetterton
"For those due to attend the Easytrack day on Monday at Snetterton, and who haven't already been contacted by the organisers, MSV understands that as of Thursday 11 April 2013, Easytrack has ceased to trade. Therefore regrettably all future events booked by Easytrack on MSV circuits have been cancelled. For more information please contact Easytrack directly on 01223 969 996."