The reasons of course were not the considerations for well-being of German civilians, but purely economical reasons. As any Soviet regions, they were given state plan for production (agriculture, consumer goods, etc) , and since majority of the workforce were Germans – expulsion of them would undermine the timetable for production severely
And that I would suspect for the most part, that they feared that they would be replaced by less educated Russians who had been fighting in the war. Thus reducing the economic value further.
documental evidence that in fact it was supported from above. By that I mean official document and not memories of Russofob Kopelev. Ye, expulsion of Germans was crime, but you attempts to put it solely on heads of Soviet Government is rather ridiculous since it was a collective decision – Soviet and the Western Allies.
Agreed, documental evidence for warcrimes is esstential if blame is to be placed. Certainly the Soviet Propaganda helped fuel the rage against German's that lead to so many horrible crimes being committed as the Red Army advanced through the "Germanized" areas of Eastern Europe and on into Germany itself. However I am yet to be convinced that the Soviet Government laid out such a policy for the murder and deportation of ethnic Germans living in what was to be Russia's sphere on influence.
The only way I feel that such a case could be formed is through pure speculation based on a few bits of evidence. Namely the Soviet Propaganda to soldiers which ammounted to "Kill all Germans" and Stalin turning a blind eye on what his soldiers did. From this one could speculate that in informal discussions, a policy had been agreed on. But even so, there would be documental evidence as orders were passed on down the chain. Given that I'm yet to come across a credible document saying any of this, this route of speculation is pointless, and wouldn't stand up to historical debate.
Yes the Russian's feared having German's living in their terroritory. The experience of 1941-45 no doubt left a huge scar on the collective mind of the Russian people that the Germans were dangerous. This can be seen through, though I'm still trying to find where I read this, the KGB spying on East Germany to make sure it wasn't about to turn on it. However, the Russian's crimes against the ethnic German's of the Baltic, Eastern Europe and Germany itself, seem to stem from more a mass movement of revenge, not from a state initiated blood bath.