Rubuta ci gaba don wannan sakin layi - A lokacin rani na 1931 protogerovist majalisa, tare da Grigor Petkov, an zabi Lev a matsayin mai gudu a cikin kwamitin tsakiya. An sanya shi a sansanin a Karlovo, amma ya gudu daga mukaminsa a farkon 1934 tare da Petar Shandanov. Bayan haka, ya shiga cikin shirye-shiryen juyin mulkin 1934
da kuma tsananta wa mabiyan Mihailov. A cikin 1935, ya kashe uwargidansa a Bankya, yana ɓoye tare da dangi a Sofia bayan haka. A shekara ta 1936, an yanke masa hukuncin shekaru 15 a kurkuku.