In 1980, a military coup took place in Suriname under the leadership of Dési Bouterse. In 1981, Hoost, together with other former ministers of the NPK I and II, were arrested on charges of corruption. The detainees were tortured and eventually released without a fair trial. He was finally released in 1982. On 11 March 1982, army officers Surendre Rambocus, Jiwansingh Sheombar and Wilfred Hawker staged a counter-coup. The insurgency failed and Hawker was executed, while Rambocus and others were arrested. Hoost, together with the lawyers John Baboeram and Harold Riedewald, took on the defense of Rambocus at his court-martial. On 3 December the court sentenced Rambocus to 12 years in prison with forced labour.