bigheat - your initial post here in this thread kind of rubbed me wrong but then I remembered you are a freshman in high school so I will give you the benefit of the doubt. Kids your age (including me at your age) say and do things they regret sometimes.
That said, you cannot control what your coach does, says, or thinks. I would have had more respect for your opinion if you would have said something like "I don't see eye-to-eye with my coach and not always sure he has the players best interest at heart. Even so, I am going to work twice as hard to overcome things."
Nothing wrong disagreeing with someone but don't make that your focus. Focus on what you can control and make yourself responsible for the future. Don't leave it up to your coach and don't use him as an excuse. Baseball is a large part about overcoming mental obsticles imho.