Correct! Thrust is equally distributed between front and rear (cold and hot) nozzles in the Harrier. Donk stops and you go straight (and level!) down +/-. A failure of one reaction control can give a hard-over in pitch or roll, with fatal results but has only (to my knowledge) happened once.
All 4 nozzles are connected by very large bicycle chains which lock them in sync, so that differing nozzle angles are not possible. Simple but very effective system. No effin great intake doors, whizzing fans or bendy rear ends sight.
Mog