TigerD, Joanne was quoting her brother Joe’s statement in his complaint to ESP.
jomustard, the poster here, is the sister and Joe is the (now deceased) brother who signed the solar panel contract.
I agree that selling the house can still be done, even with the lien, but it requires more work and can require cooperation with the buyer of the house.
jomustard, I don’t know what sort of success you will have in challenging the lien or in a disciplinary action against your attorney but, from what you have described, it appears a legal action is not without merit.