A quick bit of thrust from the rockets is all it takes to start falling. As you fall back into the atmosphere, you are surrounded by a ball of white hot flame, releasing all the energy you collected from the jets and rockets on the way up.
Eventually the flame dissipates, and the heat subsides. Through another feat of origami, the craft releases a drogue chute out the back, which unfolds to become a large parachute, and gradually unfolds several more times until it's an almost complete sphere. You open the canopy, now quite comfortably back in the lower troposphere riding in a perfectly normal hot air balloon.