Rubuta ci gaba ga wannan sakin layi - An sake shi daga kurkuku a 1960 a matsayin wani ɓangare na amnesty. Shi da matarsa sun yi hijira zuwa Burtaniya bayan mamayewar Warsaw Pact na Czechoslovakia a 1968, wanda ya murkushe Prague Spring. Krejci ya zama farfesa a fannin ilimin zamantakewa a Jami'ar Lancaster. Ya koyar a Jami'ar Jami'ar Nazarin Faransanci, Nazarin Jamus da Nazarin Addini daga 1969 zuwa 1983. Yawancin bincikensa sun mai da hankali kan tarihi da kuma samar da wayewa daga tsarin macrosociological. Ya koma Czechoslovakia da Jamhuriyar Czech bayan faduwar kwaminisanci
don koyarwa a Jami'ar Charles a Prague da Jami'ar Palacký, Olomouc, da kuma Cibiyar Harkokin Jakadancin Vienna.