There is vast room for improvement in how Fannie Mae and Freddie Mac manage their deficiency collections following foreclosure but it is the GSEs’ regulator that should provide more “guidance” about how to effectively pursue and collect from strategic defaulters, concluded the Federal Housing Finance Agency’s official watchdog this week.The FHFA Office of Inspector General’s latest audit found that in 2011, Fannie’s and Freddie’s vendors pursued 35,231 deficiency accounts, with a combined value of about $2.1 billion. Of this amount, vendors recouped some $4.7 million, a dismal recovery rate of 0.22 percent.