Not my field but...
First let me say "good luck".
Second: Any decision you make is yours and not anyones elses and consequences are something you will have to deal with and not your lawyer or people on this forum.
If I can damage the state financially for acting like idiots, then that's great.
Possible. Not just state but also all police officers involved... maybe get something out of it...
If I can blow some of my own money in order to change case law for everyone, that's fine too.
Beyond highly unlikely.
Do you want risk having this in your (probably) permanent record?
How far are you ready to go with it?
Did you contacted witnesses? Are they willing to testify?
Do you have valid medical problem?
Did anyone see that officers mixed evidence?
Did you get reports from officers about arrests?
Did you get officers files? If you are lucky they might have history of doing this.
If not demand them and any other evidence prosecution got.
I would advise you get a lawyer if charges are not dropped. If you can afford it right now it I would suggest you do it.
If not:
Get your facts on paper so you can read them!
Never ever interrupt judge. If you do apologize immediately. Prosecutor you can interrupt (he is equal as you in courtroom-if you get there)
Be careful what you say.
Your goal is not convince judge it is to persuade prosecutor that you are too much trouble so that he drops charges? Am I right here?
Say that you have witnesses who saw everything (they are ready to testify.!?). Be dressed well. Impression means a lot. They will not watch you the same if they think that you are poor(cant afford a lawyer) or rich.
In general answer questions with questin like:
Did you obstruct bla bla bla.
I dont understand how bla bla bla....
Ask then to prove that there was an obstruction of a police officer. Tell that you dont understand what were you obstructing police officers from doing? You dont understand what lawful purpose police officers were doing and how were you obstructing them...
MOST IMPORTANT:
Say:You had no intentions to obstruct or resist them.
Again how far are you ready to go?
Think twice!!!All the way?
Are you ready to sue for false arrest?
Do you want to press charges against police officer?
If yes then say if this goes on I will be forced to hire a lawyer and do all these things.
Let us know how it went.