Interesting point...
It's a classic problem in system dynamics text books. Including mine which I bought around 1970. :) Doesn't really matter if the thing is going up, or going down. More precision required at landing of course but not in the tilt component. Hardly beyond the state of the art.
As for the fuel, the thing will be a lot lighter coming back, and it only needs to put out as much thrust as it's weight, which is constantly decreasing as it descends. Still whatever fuel it takes has to be lifted with everything else. It's conceivable that might be lighter on average than a winged flyback booster, fuel and all.
Like a JDAM does it...