Then as long as one limits one's illegal activities to the confines of one's home and avoids anything that creates probable cause, one can violate any and all laws with impunity.
For the 4th amendment to apply to this issue, you would have to have a situation where the government entered without probable cause and found an illegal activity going on. In this case, they entered with probable cause after an open invitation to do so. They didn't go around looking for homos engaging in sodomy.
What part of: secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, do you not understand...
It's also obvious to anyone who doesn't support the "gay" agenda (or who has not been hitting the bong regularly) that the sodomy laws were not actually on the books to prevent people from doing whatever they do in private, it was to KEEP it private. Out of the bushes, out of the parks, not in parades, not on the streets, not in public bathrooms, not in schools, not on stage, etc etc etc.