Dream on. If the people passed a constitutional amendment to overturn the Lawrence decision, the Supreme Court could merely interpret that amendment in such a way as to make it meaningless. The 10th amendment states clearly that the courts cannot do what they did in the Lawrence Decision. But the courts have rendered the 10th amendment meaningless by interpreting it in such a way as to give it no meaning at all.
The answer is to impeach these 6 justices for violating their oath to uphold and defend that constitution and replace them all with judges who have respect for constitution.
Frankly I'm not too optimistic. We have gone over the hill on the slippery slope. From here it will only get worse.