Once you get to 100% of your hours they have to give you a check ride. It's not uncommon that someone gets no recommendations from their trainers but will still get certified at their 100% check ride. If his training stopped before then I'd say there's definitely more to the story
My buddy did exactly that with all his D-Sides after going to the TRB after his first R-Sector and he got NEST’d and put at a lower level towerIf you’ve already got some D-sides I would guess there is a good chance you’ll be offered a lower level tower. I wouldn’t be afraid to let the TRB know that you’d feel more comfortable with that for whatever reasons you may have.