hey’re bending over backwards to waste cash on turnstile jumping. The Metropolitan Transportation Authority is planning to spend up to $1 million in federal grant money on a study they hope will help them understand the mindset of the average fare evader, The Post has learned. The pricy research – which comes as the authority is crying poverty and pushing for a detested congestion pricing plan — is being blasted by critics as a huge waste that will only tell them what anyone with common sense already knows about scofflaws.