It wasn't announced Geoff T. was leaving the TRAB, was it? He may stay on, meetings are likely not very often and can be handled easily by video conferencing. There's obviously no requirement that a member be an employee of the company to serve. Or they could expand it to four, and leave Geoff on in an "Emeritus" basis, and let him earn a few bucks per meeting.
To me, it doesn't much matter, but if the Doc would like to stay on, I think he's earned the right to choose.