904 dragging in reverse

Was driving the other day. Backed out of my garage no problem. Drove 30 miles pulled into a parking spot. When it came time to leave had to give the motor a bunch more RPM to back out. Dropped my driveshaft from the rear-end. In neutral, It turned freely in one direction. The Forward direction. There was a bunch of resistance tuning in the reverse direction. Is this a broken band or maybe a return spring broken not letting Forward band back off all the way. No noise when doing it. Have not pulled the pan to look yet.