I notice that another three (excellent) former Cakewalk employees appear on that page too - Ron, Alex and Samara. Alex is a great guy, and I remember Samara was super-helpful and always went the extra nine yards when I was a regular in the
Guitar Tracks and
Home Studio forums.
I don't think Bob's departure is particularly significant though. People move on, and new people arrive, it's just the way of things.