I know historical hindsight is 20/20, but how did no one bully this guy into giving up his moronic "de-stalinisation" policy? Like the SU was built by Stalin and now suddenly hes satan incarnate? No wonder SU citizens lost faith in the party over time, how can you trust a bunch of weather vanes?
I think the CPSU was completely damaged from the onslaught of WWII and there wasn't anybody who could rebuild the party like Mao did with the CPC after the Long March killed the majority of CPC members. Stalin was way too old at that point and just wanted to retire. Being in a weakened and vulnerable state meant that opportunists can take advantage of personal and structural weaknesses within the party.