I'm thinking Roger is tightening up the belt. We're already aware of the change in him sponsoring the ESPN2 coverage after this year and the series post-2014. I believe that he is cutting back the number of drivers and Ray along with Brad, are moving on to pursue other opportunities.
I hope that Melanie is able to stay on as she moved to Atlanta to run the team.
This also makes three cars available to Roger, Leah and Melanie. After Roger crashed the Firebird, it's been musical chairs with Leah having to sit out the next race due to not having a car. There was supposed to be a 2010 Pro Line powered turbo Mustang debuting soon with Brad driving. Who knows if that car came to fruition or not.