This is interesting. According to a frequent participant in the Russia list I moderate with Peter (Lavelle) who used to be pretty high up in the Lithuanian government (I won't say how high up), the most politically active members of the Baltic diaspora post-WWII were in fact the SS/Nazi emigrees, that it was to a large extent they who ideologically sponsored the "velvet revolutions" there in 1990, and so it is not surprising that the SS would be getting rehabilitated.
He also thinks that in a few years there will be fascist torch marches all through the eastern half of the EU.
[WS:] Of course, Poland has a very different WW2 story. Unlike, say, France that formed a nominally French Vichy government collaborating with the Nazis, Poland did not form a collaboration government - it was ruled directly by a German governor (who btw was hanged after the war.) There was very little collaboration with the Nazis - the underground was divided into the pro-London and pro-Moscow camps in a kind of dog-and-hedgehog relationship: hostile but keeping a respectable distance.
As the red Army approached Warsaw, the pro-London camp launched a desperate attempt to pre-empt the Russians and liberate Warsaw, but of course it failed. As a result, much of the pro-London underground was either wiped out in the fighting on went to exile. Therefore, the post WW2 Polish diaspora was predominantly the pro-London faction that after 1956 lost any political significance to the communist era emigration (especially 1956 and 1968).
As a result, Polish diaspora tends be anti-communist as well as anti-Nazi - unlike, say, the Lithuanians or Ukrainian nationalists who were Nazi collaborators during WW2, and then formed the bulk of their respective diasporas - as the post WW2 emigration from those countries was very low until the 1990s.
So the assessment of your guest that much of the "velvet revolution" in x-USSR republics might have the ex-Nazi collaborator support is not true about Poland or Czech Republic. AFAICT, there is very little support for the Nazis in Poland - it is mostly the skinheads who are really common criminals rather than a political faction. Of course, Poland is pretty right-wing and nationalist - but generally anti-Nazi.
Wojtek