The NASCAR world has taken quite the turn in the last week or so following the retirement announcement of Martin Truex Jr. and what it could mean for Kyle Busch and others if teams shuffle going forward. This weekend, Busch was asked if there was any chance he might return to Joe Gibbs Racing. And rather than close the door shut on such talk, Busch blew the door off the hinges with his response, making it clear he absolutely would if asked. “So now it just becomes more complicated because you’ve thrown all this out there and is he happy at RCR?” said Kevin Harvick on the Kevin Harvick Happy Ho…