you might just annoy the judge,

I covered that with the part about a bad judge. Additionally, nothing stops them from changing their plea to guilty after the fact. Their court date is tomorrow. This will give them time. After that, even if OP was guilty and caught dead to rights, they could get the case dismissed if there wasn’t a valid reason to pull them over. Sure that might be unlikely, but possible. Lastly, the cop might not even show up.