In 1974, during one of Coronel's sporadic stays in Managua, preparing by the time his lectures "Three conferences to the Private Sector", he was kidnapped by the founder and leader of the Sandinista movement, Carlos Fonseca Amador. For about 12 hours he stayed in a secret house where Fonseca spoke about Nicaragua's political crisis and reminded him of his responsibility for the intellectual validation and support to Somoza's political regime, and the need to now support the end of Somoza's era. That conversation had a deep impact on him and kept in secret until later published in 1986.