The best system is what followed by russians. they have built all their space vehicals with a self-distrcuting device, except may be "MIR Sky-lab". Which destroys the space vehicals at their re-entry. and what falls on earth is just thiny particles. You can not apply it in this particular case, as for the truth again, the American laws does not allow the sapce vehicals to be equiped with any explosive device.
