A thought: I wouldn't be surprised if Stalin comes to some sort of accord with the rump Nazi Germany.
IOTL, beyond the Stalin note (which was likely a trick), it does appear in 1947, 1949, and after Stalin's death during the early stages of Malenkov's rule, the Soviets were willing to alone with a neutral, independent Germany as a buffer between the two respective blocs. Further in this regard,
the Völkischer Beobachter, the official NSDAP party paper, was considered for revival by Stalin while the Socialist Reich Party, one of the earliest and most prominent Neo-Nazi entities in Post-War Germany, was backed by the Soviets. Given all of that, I could see Stalin seeing the utility of a reunited Germany under Nazi auspices given this background.
There is a chance for that.
That being said, what about the chance for the opposite? Like, the allies left west germany so the soviets go and invade it?