I wrote and submitted my software patent application by myself and got Alice rejection (not completely unexpected). I contacted a patent lawyer to write claim amendments and he sent me contract and power of attorney forms to sign. I am comfortable with going with him but if we get final action rejection I want to switch back and continue persecution on my own. I just think it wouldn't worth all lawyer's fees. My concern: how difficult it would be to get my case back from the law firm and have POA reversed?