Magistrate Nicola Setshoege on Thursday dismissed the application, which led to the State withdrawing the matter against the three accused.
McBride said he and his colleagues had been intimidated, received threats and that there had been attempts to bribe them.
Khomotso Phahlane and his wife allegedly received kickbacks in exchange for tenders.
Ipid has uncovered a tender scam reportedly involving top police management.
The raid formed part of the investigation into former acting police commissioner Khomotso Phahlane and SAPS contractor Keith Keating.
The acting police commissioner has denied interfering in an investigation into him.
But the commissioner says the case against him is a fishing expedition.
3 Suspects In The Chief Justice Robbery Have Been Caught. But We Still Don't Know What's On Those Stolen Computers.
Details about police investigation on Office of the Chief Justice break-in leave more questions.
Gang violence between rival zama zamas could be behind the killings.
“O’Sullivan has unlawfully inveigled his way into what otherwise should be an independent investigation."