I must ask this: If Germany as a whole was so intent on destroying the Polish state and people, why was the Prussian Settlement Commission an utter failure? Why didn't the Germans just expel all the Poles from Poznan, or just kill them? Why did the Chancellor of Germany during WWI and most of the civilian government vehemently oppose the Border Strip plan? The simple fact is that most Germans may have thought that 1914 borders would be nice, but they didn't really care that much. The Great Depression was much more relevant to Hitler's rise than anti-Polish sentiment. Weimar Germany may want the Corridor, but I don't see them pushing it far enough to start a war, which is what would be required for them to get it. They'll certainly get Danzig itself, and probably without bloodshed, but not the Corridor as a whole.
I also see no reason for the USSR to collapse, with it being in an infinitely better position without the utter catastrophe that was World War II, especially with different post Stalin leadership.
I also see no reason for the USSR to collapse, with it being in an infinitely better position without the utter catastrophe that was World War II, especially with different post Stalin leadership.