Has anyone ever encountered this?

State trooper stops a guy for speeding and passing a stationary emergency vehicle (another state trooper with lights on).

SFST's

No clues on HGN, no resting nystagmus, equal tracking, equal pupil size, no glasses or contacts.

4 clues on walk and turn
2 clues on one leg stand

PBT .134
PBT on another troopers machine .124

Refuses to blow at the jail.

Has this ever happened before? I know the manual states HGN is the most accurate?

We discussed this in my SFST instructor course, odds are that the Trooper missed the HGN.

I would have to agree that is far more likely that the Trooper failed to observe the HGN.
Sounds like a Blood Search Warrant would have come in handy on this case.