Daniel, there was a guy from SRCC who recently did 3 back to back Terrible Twos. (I know - crazy!) Anyway, Matt worked the late shift SAG for him making sure he was safe. He also crewed for a friend's 508 last year. You're right - in addition to being a strong cyclist, he was just a good kid.
I caught him and his friend after Morgan Territory at DMD and he really tried to keep me with them through the flat parts. Eventually as we started up Altamont, I had to let them go. But he was someone who always would slow down to chat with you during a ride even though he was way stronger and faster.