Doesn't sound to me like anything went 'HORRIBLY, HORRIBLY Bad'.
A friend of mine once stopped at a basketball court to allow 3 of us to get out and roll a j on the dashboard of his car, then smoke it outside (about 10/11PM). He doesn't touch the stuff but patiently waited until we'd finished before driving us all home. After he'd dropped me at my house, he was stopped by cops who claimed they'd had a report of someone driving a car with his license plate 'acting suspiciously' in LOCATION X (i.e. the basketball court). They proceeded to search the car and strip every removable panel from within the interior.
You were carrying a stupid amount of drugs when there was clearly no need to be. I'm not going to say you got what you deserved - I'd never wish a cop check on someone who's trippping BUT driving should've been OUT full-stop.
Think and Learn.