For most teams, it’s hard to imagine a lower point to a season than a manager and player cursing at and threatening to fight a reporter. (Then again, most teams never get to that point in the first place.) But for the Mets, such subterranean depths only give way to darker holes far below. Case in point: the four days following Mickey Callaway and Jason Vargas behaving like belligerent lunatics, in which New York threw away four separate leads over the Phillies and, by extension, effectively buried a 2019 season that’s more toxic than a Superfund site.