I know quite a few cases, where embassy helpeld people in those cases. Some friend even evaded punishment at all, when he crashed his motorbike drunk into a car in front of a police station. Just by threatening that he will not accept any fine or leagal punishment without talking to his embassy first. The reason is that embassys can make gouverment agencies public, which will hurts tourism.
well, if you're sure. I would always be carefull when dealing with corrupted agencys in Thailand like the police or immigration. Embassys are the only thing they scare, especially the US one.