Even with the assumption that the company's attorney was their own client when drafting the agreements, since the complaint doesn't state the necessary proximate cause and damages, the malpractice allegation doesn't state a claim.
Arbitrator's ruling on the inherent illegality of the attorney's conduct applies to the consideration of proximate cause, since, under the statute, if the conduct isn't inherently illegal, the plaintiff must establish that without the advice, the risk would not have been taken.