From your description of the events, it sounds like the cop over reacted. If so and you win you may have a civil rights case against him if you spent any time in cuffs.
If what you says pans out, the likely outcome of the charge is a dismissal. OTOH do not be surprised if the cop's story differs from yours significantly.
Get a lawyer to protect your rights. They know how to do that better than you and they are used to dealing with angry and possibly lying police officers.
Be careful, and good luck.
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