Therefore, the way I see it, Stalin was not the czar Alexander. The czar could not be deposed, while Stalin could; immediately after the invasion he thought he would be killed, and being so neurotic I bet that he wasn't too comfortable even by 42. I doubt that the official discourse in the STAVKA on 41 was: "Comrades, let's allow the Huns come to the gates of the capital, when a very timely winter will freeze them solid and we'll unleash our Siberians to victory!!". I think it was more in the lines of "Comrades, we'll protect Minsk to death!"; then "Comrades, the enemy will NEVER conquer Kharkov!"; then "Comrades, the war will be won at Smolensk!". And so forth.
Have you read Russian History? Stalin took a census prior to the war. He didn't like the results. He purged the entire department. The next group told him what he wanted to hear. Of the two, Alexandra was much easier to depose than Stalin, who repeated purged every part of his government and country until everyone was afraid to stand against him. The entire country was at his disposal.