According to Yaroslav Hrytsak, during his internment, from the summer of 1941, he was not completely aware of events in Ukraine and moreover had serious differences of opinion with Mykola Lebed, the OUN-B leader who remained in Ukraine and who was one of the chief architects of the massacres of Poles.
Menurut Jaroslaw Hrycak, selama penahanan, dari musim panas 1941, ia tidak benar-benar menyadari peristiwa di Ukraina dan selain itu ia memiliki perbedaan pendapat yang serius dengan Mykola Lebed, pemimpin OUN-B yang tetap tinggal di Ukraina dan merupakan salah satu arsitek utama dari pembantaian Polandia.