Mets’ train wreck is getting harder to believe in

Brodie Van WagenenBrodie Van Wagenen said Monday that Mickey Callaway “has our full support to lead this team for the foreseeable future,” but how far into the future can the Mets’ rookie general manager really foresee if he was the guy talking trash about his remodeled club last winter?

Another circus day for the Mets — the battle for “worst-run New York professional sports team” just keeps intensifying — left one pressing question: Why in the world should Mets fans believe that this group, from owner to GM to manager, can turn this franchise right-side up?

“That’s probably a better question for the Mets fans,” said Van Wagenen, responding specifically to a question about his bona fides, and…