I am more concerned about potential criminal charges against you than you losing your job so I am reposting your matter so that criminal lawyers can review it. In my opinion, and I am not a criminal lawyer, nor am I licensed to practice in your state, I would not go to any more meetings without a criminal lawyer. Your company has lawyers representing them, and they are way more powerful than you are in this situation. I would refuse to discuss this matter with anyone except counsel. Good luck.
Your employer already seems to have decided on your guilt or innocence and is now looking for a way to build a case against you. If you are the subject of a criminal investigation any statements you make can be used in court against you. While you may think you are helping your case by explaining things, any statements you give will likely be skewed to support your employer's theory of your guilt. Your best course of action would be to quit cooperating with their investigation altogether.
As far as any criminal case is concerned: Stop talking. Statements you make to your employer can be given to the police and used against you in a criminal investigation and in trial against you.
As far as an employment matter is concerned, that's hard to say. Normally, Oregon is an "at will" state. Either employee or employer can end the relationship at any time. That you have a hearing and continued to get paid while on leave indicates that something else is going on. Is this a union job with a particular agreement in effect? What are the terms of that agreement? Without that information, it's hard to say.
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