The image that WADE had created as the good-natured innocent fat boy genius who Kow Towed to authority and did as told by the evil MP took a hit or two back then.
JB took care when he brought him back to designate him as a consultant, not an employee. Most likely on the advice of MP.
But CDEX needed a new DOO-HICKY and a plausible inventor. Wade as a Doctor, filled the bill. So was born the IMAGINARY G4.