MY lawyer was declared a witness in my homewoner insurance claim and did not inform me of my rights or get a consent. Is this MalPractice?

My attorney was made a witness and and deposed twice in my homeowners insurance claim case. He failed to inform me of my rights to hire another firm and did not offer a consent form. Then in the end of the case, he bailed a few days before trial when the insurance company threatened him, which caused the loss of the case. He billed me $477K during the case and was paid $345K, most of which was after he was declared a witness. He is now suing for the balance in a cross complaint fro malpractice. My current attorney is very ill and can not continue. If I do not find another lawyer, I will have to either pay him for what he did to me or file bankruptcy.