@convex:Don't get me wrong, I have hardly any sympathy for the man: he's a volksdeutch,
who has German citizenship and lives in Germany since 1989. Out of all countries
he could choose to emmigrate, he chose Germany, has been living there for over
20 years now, married a German woman and has kids with her, so he pretty much
deserves everything he gets. If he was so worried about his kids' Polish heritage
he might have thought about all that before he joined the dark side ;)
However, on the other hand, the girls used to speak Polish with their father,
their mother also learnt that language (so even she would be able to act as
an interpreter during the meetings) and the whole family, on occassions, spoke
Polish at home.
After the divorce, girls' mother stopped speaking Polish to them at all so,
consequently, they forgot that language. Their father didn't like that, and
being their father had full right to have a say in his daughters heritage and
upbringing.
We are dealing with a situation where a woman is having a revenge on her
ex-husband (against whom, she obviously still bears some kind of grudge)
and German jugendamt authorities are aiding her in her personal revenge
of depriving her children of their father's national heritage.
And what would a Polish court do about a Welshman who insisted on speaking Welsh to his kids during supervised visits?
If the mother (present during the visit) spoke Welsh too (just as Pomorski's wife
speaks Polish and is present during the visits) - I don't see why it should be a problem
at all.