If you do not download the modification software the "Hot Coffee" scenes will not be playable. When playing an unmodified version of Grand Theft Auto: San Andreas there is absolutely no way to access these scenes.-- No More Hot Coffee
So the PC version is now cleansable. Course, any hacker worth his skin can more or less take the old version, the new version, run some clever diffs and release a whole new patch. Hence, the debate of "games are always moddable" is still live and will likely be playing at a Congressional debate near you.