How do Holocaust deniers explain the Posen speeches?

I am now referring to the evacuation of the Jews, the extermination of the Jewish people. It's one of those things that is easily said: 'The Jewish people are being exterminated', says every party member, 'this is very obvious, it's in our program, elimination of the Jews, extermination, we're doing it, hah, a small matter.' And then they turn up, the upstanding 80 million Germans, and each one has his decent Jew. They say the others are all swines, but this particular one is a splendid Jew. But none has observed it, endured it. Most of you here know what it means when 100 corpses lie next to each other, when there are 500 or when there are 1,000. To have endured this and at the same time to have remained a decent person — with exceptions due to human weaknesses — has made us tough, and is a glorious chapter that has not and will not be spoken of. Because we know how difficult it would be for us if we still had Jews as secret saboteurs, agitators and rabble-rousers in every city, what with the bombings, with the burden and with the hardships of the war. If the Jews were still part of the German nation, we would most likely arrive now at the state we were at in 1916 and 17 […]