Moto, you obviously think you have this nailed and all you need is for someone here to point you whichever direction you need to go to file a complaint, and when you get there your charges will be dropped and the cop will get hammered and maybe fired, and if they're very lucky, you might let them rise off their knees long enough to kiss your ring before you stride, vindicated, from the police station, secure in the knowledge that you have emerged victorious from the battle for truth, justice, and the American way. Cue the music.
I'm telling you. Listen to me--I'm telling you. You are setting yourself up for a potentially extreme disappointment.
You do not know what you think you know. All you know is how you think it should be, and that's what you're expecting to happen. When it comes to the law, I can't think of two more mutually exclusive concepts than "should be" and "is".
On the other hand, as far as any of us know, maybe it was a bad bust and it may, indeed, be completely defensible. But even so, nobody can give you any of the advise you really need (as opposed to the minimum you think you need) if you don't start forking over more details about the nature of the arrest and the other questions that were asked.
Listen to these people. They know what they're talking about. Especially CdwJava.