transmission guys, need a little help

Sounds to me that your rear reverse band is to tight.When you put it manual low the rear band apply's to support the rear roller clutch.If the rear band don't release fast enough it will tie up causing a binding condition.
If it barks the tires from first to second it may have a shift kit,or someone modified the valvebody.
I would check the rear band adjustment try backing the throttle pressure back a little to see if that helps.