walter scott shouted obscenities at a man and pushed a deputy , was jailed .
report also shows he was $ 7,500 down on child support when he was shot .
had already been jailed three times for missing payments in 2011 and 2012 .
there was nothing directing officers to bring him to family court .
dashcam footage shows scott running from his car after being pulled over .
minutes later officer slager shot him in the back in a nearby park .