The situation over Europe is really bad right now, with the air traffic grounded in most states. Some heads of government returning after state visits like Merkel or Stoltenberg of Norway have been on an odyssey through Europe via car or train.
The Poles had enough commies running around their country. His absence is a God send, actually.
Actually, economically speaking, Kaczynski himself was far left of Obama. He always fought hard to keep state-run health care, with Tusk pressing for market-oriented reform.