Any time you have two opposite sides in court, one says yes the other says no, one of them is lying. So, in addition to a regular guilty / not-guilty verdict, do you want to also see an automatic contempt of court verdict for the losing party?
If they provably and knowingly lied it seems reasonable. Here there seems like ~0% chance that the FBI expert in computer forensics (which they'd need to be to be running such an investigation, surely) can't possibly know that he's not lying?
If you can't tell the truth in court then keep your mouth shut or you'll be punished accordingly seems like the exact message a country intending to operate under the rule-of-law should be promoting.
