If a single person fought back in the Bunker or, not understanding Russian, made a single wrong move the soviets would have gunned them down. I imagine they would have immediately upon seeing German military uniforms. And really, why would they think Hitler was in that area in specific? Infantry wouldn't know the fine details of espionage, and the top brass might think Hitler was at another bunker or just not care. The Soviets would also probably push for the Crimes Against Humanity thing over mere war crimes. Might be awkward if they get hosting rights for the trial, and someone goes on about the Soviet claim (well, to an extent in propoganda. Not sure on the details) that concentration camps were used for eliminating surplus workers. Having it pointing out that the people in the camps were their either because they were Jewish or because they were priests, landowners, civic group leaders, bankers, politicians, soldiers, policemen, teachers, etc wouldn't go well with propaganda but it is hardly as if things like that would be broadcast live in every home and workplace. And if Hitler is tried he is given a trial with the others, shows no remorse and uses it as a chance to talk about what he did, then ends up being hanged. Like with Napoleon ending up on St. Helena becoming a symbol of hubris for someone stretching too far (and those giving added glory to Napoleon's legend) I think that there would be a different view on Hitler if he goes to his death without fear or pleasing, instead of being in his bunker raving mad, getting married, then committing suicide.