No! That's some really awful news. During my years I haven't personally had much discussions or interactions with Terry, but he certainly is a memorable character and poster on this place. An intelligent, funny and very sympathetic person. I remember when he got a mod status not that long ago, and how I thought it was a great choice. He'll certainly be missed.
I've noticed his absence during last months, but never would I've guessed it would be at this level of tragedy. And only at 43.. Very sad, and my thoughts and condolences goes to his family.
Edit: Before I forget. A slightly light hearted detail in his memory: In Terry's last Custom Title, he had my actual first name included, and I always laughed whenever I saw that without knowing the reference. Now I'll never probably know, but that doesn't matter anymore..