Bronislav Rybensky was denied permission to make a trip back to see his sick father amid claims that alleged victims are living in fear.
The 31-year-old, with an address at College Central Apartments, Belfast, was arrested in August 2011 as part of a police operation against a suspected vice ring in the city.
Six eastern European women, believed to have been brought to Northern Ireland to work in the sex trade, were rescued during raids on a number of properties.
Rybensky faces charges of trafficking into UK for sexual exploitation, controlling prostitution, and brothel keeping. Although he is already on bail, his lawyer sought a temporary lifting of the ban on him leaving Northern Ireland.
Belfast Magistrates' Court heard on Monday that the accused wanted to be allowed to travel to Decin to visit his gravely ill father.
His barrister argued that the town was well away from Prague, where any witnesses in the case may be located.
Claims that alleged victims are in fear were also disputed, with the defence questioning whether they wanted to come to court.
District Judge Fiona Bagnall was told Rybensky has settled in Northern Ireland and now works as a welder.
But she refused to let him go back to the Czech Republic, citing the risk that he may not return for any trial.
Mrs Bagnall did, however, allow an electronic monitoring condition to be lifted.