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You certainly can let your attorney go, but the reality is that the attorney only knows what you and your realtor tell him. Your realtor is the one who made the error and your attorney is going to fix it for you, to protect your interests. That is their job. You need to trust your attorney and your realtor. If you do not, then you need to find people that you do trust, someone that earns your trust and respect.
I hope this helps. Please let me know if you have more questions.