It turns out he isn't the only one holding this view. Today I see the same opinion from Marcin Zaborowski, a Pole, on the website of Carnegie Europe, who writes:
A high concentration of a Russian-speaking population also exists in the Baltic states, but the local circumstances there are markedly different from those in Ukraine. Most importantly, the living standards and freedoms enjoyed by the Baltic states, which are higher than in Russia, mean that while local Russians may hold grievances, they would be unlikely to turn against their states.The Baltic states better hope these fellows are correct; being wrong could be fatal.