Question: Roy Gilbert was an expert witness in a toxic tort lawsuit. When Gilbert sent his final bill to attorneys Akins & Pettiette, they did not pay, so Gilbert's lawyer sent a letter demanding $5,448.25. Akins & Pettiette sent a check for $5,448.25 that stated: "Endorsement of this check constitutes... indemnity . . . of any and all claims and/or causes of action that arise or may arise out of" the toxic tort case and the present case. Gilbert rejected the check. The lawyers claimed he breached a contract to settle for $5,448.25. Did he?