Released from Soviet prison following the creation of the communist-controlled Provisional Government of National Unity, he returned to the bar and active political career within the reactivated Polish People's Party, the most popular party in Poland at the time and the main opposition force to the Soviet-backed communist regime. 30 of the 145 seats in the post-war government were offered to non-Soviet supported group and it was planned for Korboński to be part of the post-war government but his name was removed by Bierut.
Released from Soviet prison following the creation of a communist-controlled government, he returned to law practice and active politics within the reactivated Polish People's Party, which dominated Polish politics at the time and opposed the Soviet-backed communist regime. 30 out of 145 seats in the post-war government were reserved for non-Soviet backed groups, with Korboński planned to be part of the new government but his name was removed by Bierut.